diff --git a/MK404-build.sh b/MK404-build.sh
new file mode 100755
index 000000000..9c7a14ba9
--- /dev/null
+++ b/MK404-build.sh
@@ -0,0 +1,223 @@
+#!/bin/bash 
+# This bash script is used to compile automatically the MK404 simulator
+# 
+# Supported OS:  Linux64 bit
+#
+# Linux:
+# Linux Ubuntu
+# 1. Follow these instructions
+# 2. Open Ubuntu bash and get latest updates with 'sudo apt-get update'
+# 3. Install latest updates with 'sudo apt-get upgrade'
+# 4.
+#
+# Version: 0.1-Build_3
+# Change log:
+# 11 Feb 2021, 3d-gussner, Inital
+# 11 Feb 2021, 3d-gussner, Optional flags to check for updates
+# 12 Feb 2021, 3d-gussner, Update cmake
+# 13 Feb 2021, 3d-gussner, Auto build SD cards
+
+while getopts c:u:f:m:g:?h flag
+    do
+        case "${flag}" in
+            c) check_flag=${OPTARG};;
+            u) update_flag=${OPTARG};;
+            f) force_flag=${OPTARG};;
+            m) mk404_flag=${OPTARG};;
+            g) graphics_flag=${OPTARG};;
+            ?) help_flag=1;;
+            h) help_flag=1;;
+        esac
+    done
+echo "$check_flag"
+echo "$update_flag"
+echo "$force_flag"
+echo "$mk404_flag"
+echo "$graphics_flag"
+
+
+#### Start check if OSTYPE is supported
+OS_FOUND=$( command -v uname)
+case $( "${OS_FOUND}" | tr '[:upper:]' '[:lower:]') in
+  linux*)
+    TARGET_OS="linux"
+   ;;
+  *)
+    TARGET_OS='unknown'
+    ;;
+esac
+# Linux
+if [ $TARGET_OS == "linux" ]; then
+	if [ $(uname -m) == "x86_64" ]; then
+		echo "$(tput setaf 2)Linux 64-bit found$(tput sgr0)"
+		Processor="64"
+	#elif [[ $(uname -m) == "i386" || $(uname -m) == "i686" ]]; then
+	#	echo "$(tput setaf 2)Linux 32-bit found$(tput sgr0)"
+	#	Processor="32"
+	else
+		echo "$(tput setaf 1)Unsupported OS: Linux $(uname -m)"
+		echo "Please refer to the notes of build.sh$(tput sgr0)"
+		exit 1
+	fi
+else
+	echo "$(tput setaf 1)This script doesn't support your Operating system!"
+	echo "Please use Linux 64-bit"
+	echo "Read the notes of build.sh$(tput sgr0)"
+	exit 1
+fi
+sleep 2
+#### End check if OSTYPE is supported
+
+#### Check MK404 dependencies
+packages=(
+"libelf-dev"
+"gcc-7"
+"gcc-avr"
+"libglew-dev"
+"freeglut3-dev"
+"libsdl-sound1.2-dev"
+"libpng-dev"
+"cmake"
+"zip"
+"wget"
+"git"
+"build-essential"
+"lcov"
+"mtools"
+)
+
+for check_package in ${packages[@]}; do
+    if dpkg-query -W -f'${db:Status-Abbrev}\n' $check_package 2>/dev/null \
+ | grep -q '^.i $'; then
+        echo "$(tput setaf 2)$check_package: Installed$(tput sgr0)"
+    else
+        echo "$(tput setaf 1)$check_package: Not installed use $(tput setaf 3)'sudo apt install $check_package'$(tput setaf 1) to install missing package$(tput sgr0)"
+        not_installed=1;
+    fi
+done
+
+if [ "$not_installed" = "1" ]; then
+    exit 4
+fi
+#### End Check MK404 dependencies
+
+#### Set build environment 
+MK404_SCRIPT_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
+MK404_URL="https://github.com/vintagepc/MK404.git"
+MK404_owner="vintagepc"
+MK404_project="MK404"
+MK404_PATH="$MK404_SCRIPT_PATH/../MK404/master"
+MK404_BUILD_PATH="$MK404_PATH/build"
+
+
+# List few useful data
+echo
+echo "Script path :" $MK404_SCRIPT_PATH
+echo "OS          :" $OS
+echo "OS type     :" $TARGET_OS
+echo ""
+echo "MK404 path  :" $MK404_PATH
+
+# Clone MK404 if needed
+if [ ! -d $MK404_PATH ]; then
+    #release_url=$(curl -Ls -o /dev/null -w %{url_effective} https://github.com/$MK404_owner/$MK404_project/releases/latest)
+    #release_tag=$(basename $release_url)
+    #git clone -b $release_tag -- https://github.com/$MK404_owner/$MK404_project.git $MK404_PATH
+    git clone $MK404_URL $MK404_PATH
+fi
+
+
+
+
+# 
+cd $MK404_PATH
+
+# Check for updates ... WIP
+
+# Check MK404
+if [ "$force_flag" == "1" ]; then
+    check_flag=1
+    update_flag=1
+fi
+if [ "$update_flag" == "1" ]; then
+    check_flag=1
+fi
+if [ "$check_flag" == "1" ]; then
+    if [ -d $MK404_BUILD_PATH ]; then
+        cd $MK404_BUILD_PATH
+        MK404_current_version=$( command ./MK404 --version | grep "MK404" | cut -f 4 -d " ")
+        cd $MK404_PATH
+    else
+        echo "Cannot check current version as it has not been build."
+    fi
+# Get local Commit_Hash
+    MK404_local_GIT_COMMIT_HASH=$(git log --pretty=format:"%H" -1)
+# Get local Commit_Number
+    MK404_local_GIT_COMMIT_NUMBER=$(git rev-list HEAD --count)
+# Get remote Commit_Hash
+    MK404_remote_GIT_COMMIT_HASH=$(git ls-remote --heads $(git config --get remote.origin.url) | grep "refs/heads/master" | cut -f 1)
+# Get remote Commit_Number
+    MK404_remote_GIT_COMMIT_NUMBER=$(git rev-list origin/master --count)
+# Output
+    echo "Current version         : $MK404_current_version"
+    echo ""
+    echo "Current local hash      : $MK404_local_GIT_COMMIT_HASH"
+    echo "Current local commit nr : $MK404_local_GIT_COMMIT_NUMBER"
+    if [ "$MK404_local_GIT_COMMIT_HASH" != "$MK404_remote_GIT_COMMIT_HASH" ]; then
+        echo "$(tput setaf 1)"
+    else
+        echo "$(tput sgr 0)"
+    fi
+    echo "Current remote hash     : $MK404_remote_GIT_COMMIT_HASH"
+    echo "Current remote commit nr: $MK404_remote_GIT_COMMIT_NUMBER"
+    echo "$(tput sgr 0)"
+
+# Check for updates
+    if [[ "$MK404_local_GIT_COMMIT_HASH" != "$MK404_remote_GIT_COMMIT_HASH" && -z "$update_flag" ]]; then
+        echo "$(tput setaf 2)Update is availible.$(tput sgr 0)"
+        read -t 10 -n 1 -p "$(tput setaf 3)Update now Y/n$(tput sgr 0)" update_answer
+        if [ "$update_answer" == "Y" ]; then
+            update_flag=1
+        fi
+        echo ""
+    fi
+fi
+# Check for updates
+if [ "$update_flag" == "1" ]; then
+    if [ "$MK404_local_GIT_COMMIT_HASH" != "$MK404_remote_GIT_COMMIT_HASH" ]; then
+        echo ""
+        git fetch --all
+        read -t 10 -p "$(tput setaf 2)Updating MK404 !$(tput sgr 0)"
+        echo ""
+        git reset --hard origin/master
+        read -t 10 -p "$(tput setaf 2)Compiling MK404 !$(tput sgr 0)"
+        echo ""
+        force_flag=1
+    fi
+fi
+
+# Prepare MK404
+mkdir -p $MK404_BUILD_PATH
+if [[ ! -f "$MK404_BUILD_PATH/Makefile" || "$force_flag" == "1" ]]; then
+# Init and update submodules
+    git submodule init
+    git submodule update
+    cmake -B$MK404_BUILD_PATH -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_BUILD_TYPE=Release -G "Unix Makefiles"
+fi
+
+# Make MK404
+cd $MK404_BUILD_PATH
+if [[ ! -f "$MK404_BUILD_PATH/MK404" || "$force_flag" == "1" ]]; then
+    make
+fi
+
+# Make SDcards
+if [[ ! -f "$MK404_BUILD_PATH/Prusa_MK3S_SDcard.bin" || "$force_flag" == "1" ]]; then
+    cmake --build $MK404_BUILD_PATH --config Release --target Prusa_MK3S_SDcard.bin
+    cmake --build $MK404_BUILD_PATH --config Release --target Prusa_MK3_SDcard.bin
+    cmake --build $MK404_BUILD_PATH --config Release --target Prusa_MK25_13_SDcard.bin
+    cmake --build $MK404_BUILD_PATH --config Release --target Prusa_MK25S_13_SDcard.bin
+    cmake --build $MK404_BUILD_PATH --config Release --target Prusa_MK3SMMU2_SDcard.bin
+    cmake --build $MK404_BUILD_PATH --config Release --target Prusa_MK3MMU2_SDcard.bin
+fi
+
diff --git a/PF-build.sh b/PF-build.sh
index c51b1fd4e..7224924e4 100755
--- a/PF-build.sh
+++ b/PF-build.sh
@@ -56,7 +56,7 @@
 #   Some may argue that this is only used by a script, BUT as soon someone accidentally or on purpose starts Arduino IDE
 #   it will use the default Arduino IDE folders and so can corrupt the build environment.
 #
-# Version: 1.0.6-Build_37
+# Version: 1.2.0-Build_49
 # Change log:
 # 12 Jan 2019, 3d-gussner, Fixed "compiler.c.elf.flags=-w -Os -Wl,-u,vfprintf -lprintf_flt -lm -Wl,--gc-sections" in 'platform.txt'
 # 16 Jan 2019, 3d-gussner, Build_2, Added development check to modify 'Configuration.h' to prevent unwanted LCD messages that Firmware is unknown
@@ -91,7 +91,7 @@
 # 13 Mar 2019, 3d-gussner, MKbel updated the Linux build environment to version 1.0.2 with an Fix maximum firmware flash size.
 #                          So did I
 # 11 Jul 2019, deliopoulos,Updated to v1.0.6 as Prusa needs a new board definition for Firmware 3.8.x86_64
-#						   - Split the Download of Windows Arduino IDE 1.8.5 and Prusa specific part
+#                           - Split the Download of Windows Arduino IDE 1.8.5 and Prusa specific part
 #                            --> less download volume needed and saves some time
 #
 # 13 Jul 2019, deliopoulos,Splitting of Arduino IDE and Prusa parts also for Linux64
@@ -136,7 +136,18 @@
 # 08 Jan 2021, 3d-gussner, Comment out 'sudo' auto installation
 #                          Add '-?' '-h' help option
 # 27 Jan 2021, 3d-gussner, Add `-c`, `-p` and `-n` options
+# 12 Feb 2021, 3d-gussner, Add MK404-build.sh
+# 13 Feb 2021, 3d-gussner, Indentations
+# 13 Feb 2021, 3d-gussner, MK404 improvements like "flash" MK3, MK3S languages files to MK404 xflash.
 # 27 Feb 2021, 3d-gussner, Add './lang-community.sh' and update exits
+# 03 May 2021, 3d-gussner, Update exit numbers
+#                          01-14 prepare build env
+#                          21-32 prepare compiling
+#                          41-47 compiling
+#                          51-54 cleanup 
+#                          61-62 MK404
+# 03 May 2021, 3d-gussner, Update documentation and change version to v1.2.0
+# 03 May 2021, 3d-gussner, Add SIM atmega404
 
 #### Start check if OSTYPE is supported
 OS_FOUND=$( command -v uname)
@@ -158,35 +169,35 @@ case $( "${OS_FOUND}" | tr '[:upper:]' '[:lower:]') in
 esac
 # Windows
 if [ $TARGET_OS == "windows" ]; then
-	if [ $(uname -m) == "x86_64" ]; then
-		echo "$(tput setaf 2)Windows 64-bit found$(tput sgr0)"
-		Processor="64"
-	elif [ $(uname -m) == "i386" ]; then
-		echo "$(tput setaf 2)Windows 32-bit found$(tput sgr0)"
-		Processor="32"
-	else
-		echo "$(tput setaf 1)Unsupported OS: Windows $(uname -m)"
-		echo "Please refer to the notes of build.sh$(tput sgr0)"
-		exit 1
-	fi
+    if [ $(uname -m) == "x86_64" ]; then
+        echo "$(tput setaf 2)Windows 64-bit found$(tput sgr0)"
+        Processor="64"
+    elif [ $(uname -m) == "i386" ]; then
+        echo "$(tput setaf 2)Windows 32-bit found$(tput sgr0)"
+        Processor="32"
+    else
+        echo "$(tput setaf 1)Unsupported OS: Windows $(uname -m)"
+        echo "Please refer to the notes of build.sh$(tput sgr0)"
+        exit 1
+    fi
 # Linux
 elif [ $TARGET_OS == "linux" ]; then
-	if [ $(uname -m) == "x86_64" ]; then
-		echo "$(tput setaf 2)Linux 64-bit found$(tput sgr0)"
-		Processor="64"
-	elif [[ $(uname -m) == "i386" || $(uname -m) == "i686" ]]; then
-		echo "$(tput setaf 2)Linux 32-bit found$(tput sgr0)"
-		Processor="32"
-	else
-		echo "$(tput setaf 1)Unsupported OS: Linux $(uname -m)"
-		echo "Please refer to the notes of build.sh$(tput sgr0)"
-		exit 1
-	fi
+    if [ $(uname -m) == "x86_64" ]; then
+        echo "$(tput setaf 2)Linux 64-bit found$(tput sgr0)"
+        Processor="64"
+    elif [[ $(uname -m) == "i386" || $(uname -m) == "i686" ]]; then
+        echo "$(tput setaf 2)Linux 32-bit found$(tput sgr0)"
+        Processor="32"
+    else
+        echo "$(tput setaf 1)Unsupported OS: Linux $(uname -m)"
+        echo "Please refer to the notes of build.sh$(tput sgr0)"
+        exit 1
+    fi
 else
-	echo "$(tput setaf 1)This script doesn't support your Operating system!"
-	echo "Please use Linux 64-bit or Windows 10 64-bit with Linux subsystem / git-bash"
-	echo "Read the notes of build.sh$(tput sgr0)"
-	exit 1
+    echo "$(tput setaf 1)This script doesn't support your Operating system!"
+    echo "Please use Linux 64-bit or Windows 10 64-bit with Linux subsystem / git-bash"
+    echo "Read the notes of build.sh$(tput sgr0)"
+    exit 1
 fi
 sleep 2
 #### End check if OSTYPE is supported
@@ -194,67 +205,178 @@ sleep 2
 #### Prepare bash environment and check if wget, zip and other needed things are available
 # Check wget
 if ! type wget > /dev/null; then
-	echo "$(tput setaf 1)Missing 'wget' which is important to run this script"
-	echo "Please follow these instructions https://gist.github.com/evanwill/0207876c3243bbb6863e65ec5dc3f058 to install wget$(tput sgr0)"
-	exit 2
+    echo "$(tput setaf 1)Missing 'wget' which is important to run this script"
+    echo "Please follow these instructions https://gist.github.com/evanwill/0207876c3243bbb6863e65ec5dc3f058 to install wget$(tput sgr0)"
+    exit 2
 fi
 
 # Check for zip
 if ! type zip > /dev/null; then
-	if [ $TARGET_OS == "windows" ]; then
-		echo "$(tput setaf 1)Missing 'zip' which is important to run this script"
-		echo "Download and install 7z-zip from its official website https://www.7-zip.org/"
-		echo "By default, it is installed under the directory /c/Program Files/7-Zip in Windows 10 as my case."
-		echo "Run git Bash under Administrator privilege and"
-		echo "navigate to the directory /c/Program Files/Git/mingw64/bin,"
-		echo "you can run the command $(tput setaf 2)ln -s /c/Program Files/7-Zip/7z.exe zip.exe$(tput sgr0)"
-		exit 3
-	elif [ $TARGET_OS == "linux" ]; then
-		echo "$(tput setaf 1)Missing 'zip' which is important to run this script"
-		echo "install it with the command $(tput setaf 2)'sudo apt-get install zip'$(tput sgr0)"
-		#sudo apt-get update && apt-get install zip
-		exit 3
-	fi
+    if [ $TARGET_OS == "windows" ]; then
+        echo "$(tput setaf 1)Missing 'zip' which is important to run this script"
+        echo "Download and install 7z-zip from its official website https://www.7-zip.org/"
+        echo "By default, it is installed under the directory /c/Program Files/7-Zip in Windows 10 as my case."
+        echo "Run git Bash under Administrator privilege and"
+        echo "navigate to the directory /c/Program Files/Git/mingw64/bin,"
+        echo "you can run the command $(tput setaf 2)ln -s /c/Program Files/7-Zip/7z.exe zip.exe$(tput sgr0)"
+        exit 3
+    elif [ $TARGET_OS == "linux" ]; then
+        echo "$(tput setaf 1)Missing 'zip' which is important to run this script"
+        echo "install it with the command $(tput setaf 2)'sudo apt-get install zip'$(tput sgr0)"
+        #sudo apt-get update && apt-get install zip
+        exit 3
+    fi
 fi
 # Check python ... needed during language build
 if ! type python > /dev/null; then
-	if [ $TARGET_OS == "windows" ]; then
-		echo "$(tput setaf 1)Missing 'python3' which is important to run this script"
-		exit 4
-	elif [ $TARGET_OS == "linux" ]; then
-		echo "$(tput setaf 1)Missing 'python' which is important to run this script"
-		echo "As Python 2.x will not be maintained from 2020 please,"
-		echo "install it with the command $(tput setaf 2)'sudo apt-get install python3'."
-		echo "Check which version of Python3 has been installed using 'ls /usr/bin/python3*'"
-		echo "Use 'sudo ln -sf /usr/bin/python3.x /usr/bin/python' (where 'x' is your version number) to make it default.$(tput sgr0)"
-		#sudo apt-get update && apt-get install python3 && ln -sf /usr/bin/python3 /usr/bin/python
-		exit 4
-	fi
+    if [ $TARGET_OS == "windows" ]; then
+        echo "$(tput setaf 1)Missing 'python3' which is important to run this script"
+        exit 4
+    elif [ $TARGET_OS == "linux" ]; then
+        echo "$(tput setaf 1)Missing 'python' which is important to run this script"
+        echo "As Python 2.x will not be maintained from 2020 please,"
+        echo "install it with the command $(tput setaf 2)'sudo apt-get install python3'."
+        echo "Check which version of Python3 has been installed using 'ls /usr/bin/python3*'"
+        echo "Use 'sudo ln -sf /usr/bin/python3.x /usr/bin/python' (where 'x' is your version number) to make it default.$(tput sgr0)"
+        #sudo apt-get update && apt-get install python3 && ln -sf /usr/bin/python3 /usr/bin/python
+        exit 4
+    fi
 fi
 
 # Check gawk ... needed during language build
 if ! type gawk > /dev/null; then
-	if [ $TARGET_OS == "linux" ]; then
-		echo "$(tput setaf 1)Missing 'gawk' which is important to run this script"
-		echo "install it with the command $(tput setaf 2)'sudo apt-get install gawk'."
-		#sudo apt-get update && apt-get install gawk
-		exit 5
-	fi
+    if [ $TARGET_OS == "linux" ]; then
+        echo "$(tput setaf 1)Missing 'gawk' which is important to run this script"
+        echo "install it with the command $(tput setaf 2)'sudo apt-get install gawk'."
+        #sudo apt-get update && apt-get install gawk
+        exit 5
+    fi
 fi
 
 #### End prepare bash / Linux environment
 
+# Check for options/flags
+while getopts b:c:d:f:g:h:i:l:m:n:o:p:v:x:?h flag
+    do
+        case "${flag}" in
+            b) build_flag=${OPTARG};;
+            c) clean_flag=${OPTARG};;
+            d) devel_flag=${OPTARG};;
+            f) board_flash_flag=${OPTARG};;
+            g) graphics_flag=${OPTARG};;
+            h) help_flag=1;;
+            i) IDE_flag=${OPTARG};;
+            l) language_flag=${OPTARG};;
+            m) mk404_flag=${OPTARG};;
+            n) new_build_flag=${OPTARG};;
+            o) output_flag=${OPTARG};;
+            p) prusa_flag=${OPTARG};;
+            v) variant_flag=${OPTARG};;
+            x) board_mem_flag=${OPTARG};;
+            ?) help_flag=1;;
+        esac
+    done
+
+#
+# '?' 'h' argument usage and help
+if [ "$help_flag" == "1" ] ; then
+echo "***************************************"
+echo "* PF-build.sh Version: 1.2.0-Build_49 *"
+echo "***************************************"
+echo "Arguments:"
+echo "$(tput setaf 2)-b$(tput sgr0) Build/commit number '$(tput setaf 2)Auto$(tput sgr0)' needs git or a number"
+echo "$(tput setaf 2)-c$(tput sgr0) Do not clean up lang build'$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes"
+echo "$(tput setaf 2)-d$(tput sgr0) Devel build '$(tput setaf 2)GOLD$(tput sgr0)', '$(tput setaf 2)RC$(tput sgr0)', '$(tput setaf 2)BETA$(tput sgr0)', '$(tput setaf 2)ALPHA$(tput sgr0)', '$(tput setaf 2)DEBUG$(tput sgr0)', '$(tput setaf 2)DEVEL$(tput sgr0)' and '$(tput setaf 2)UNKNOWN$(tput sgr0)'"
+echo "$(tput setaf 2)-f$(tput sgr0) Board flash size '$(tput setaf 2)256$(tput sgr0)','$(tput setaf 2)384$(tput sgr0)','$(tput setaf 2)512$(tput sgr0)','$(tput setaf 2)1024$(tput sgr0)''$(tput setaf 2)32M$(tput sgr0)'"
+echo "$(tput setaf 2)-g$(tput sgr0) Start MK404 grafics '$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' lite '$(tput setaf 2)2$(tput sgr0)' fancy"
+echo "$(tput setaf 2)-h$(tput sgr0) Help"
+echo "$(tput setaf 2)-i$(tput sgr0) Arduino IDE version '$(tput setaf 2)1.8.5$(tput sgr0)', '$(tput setaf 2)1.8.13$(tput sgr0)'"
+echo "$(tput setaf 2)-l$(tput sgr0) Languages '$(tput setaf 2)ALL$(tput sgr0)' for multi language or '$(tput setaf 2)EN_ONLY$(tput sgr0)' for English only"
+echo "$(tput setaf 2)-m$(tput sgr0) Start MK404 sim '$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes '$(tput setaf 2)2$(tput sgr0)' with MMU2"
+echo "$(tput setaf 2)-n$(tput sgr0) New fresh build '$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes"
+echo "$(tput setaf 2)-o$(tput sgr0) Output '$(tput setaf 2)1$(tput sgr0)' force or '$(tput setaf 2)0$(tput sgr0)' block output and delays"
+echo "$(tput setaf 2)-p$(tput sgr0) Keep Configuration_prusa.h '$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes"
+echo "$(tput setaf 2)-v$(tput sgr0) Variant '$(tput setaf 2)All$(tput sgr0)' or variant file name"
+echo "$(tput setaf 2)-x$(tput sgr0) Board memory size '$(tput setaf 2)8$(tput sgr0)' or '$(tput setaf 2)64$(tput sgr0)' Kb."
+echo "$(tput setaf 2)-?$(tput sgr0) Help"
+echo 
+echo "Brief USAGE:"
+echo "  $(tput setaf 2)./PF-build.sh$(tput sgr0)  [-v] [-l] [-d] [-b] [-o] [-c] [-p] [-n]"
+echo
+echo "Example:"
+echo "  $(tput setaf 2)./PF-build.sh -v All -l ALL -d GOLD$(tput sgr0)"
+echo "  Will build all variants as multi language and final GOLD version"
+echo
+echo "  $(tput setaf 2) ./PF-build.sh -v 1_75mm_MK3S-EINSy10a-E3Dv6full.h -b Auto -l ALL -d GOLD -o 1 -c 1 -p 1 -n 1$(tput sgr0)"
+echo "  Will build MK3S multi language final GOLD firmware "
+echo "  with current commit count number and output extra information,"
+echo "  not delete lang build temporary files, keep Configuration_prusa.h and build with new fresh build folder."
+echo
+exit 6
+fi
+
+#Check if Build is selected with argument '-f'
+if [ ! -z "$board_flash_flag" ] ; then
+    if [ "$board_flash_flag" == "256" ] ; then
+        BOARD_FLASH="0x3FFFF"
+        BOARD_maximum_size="253952"
+        echo "Board flash size :   $board_flash_flag Kb, $BOARD_maximum_size bytes, $BOARD_FLASH (hex)"
+    elif [ "$board_flash_flag" == "384" ] ; then
+        BOARD_FLASH="0x5FFFF"
+        BOARD_maximum_size="385024"
+        echo "Board flash size :   $board_flash_flag Kb, $BOARD_maximum_size bytes, $BOARD_FLASH (hex)"
+    elif [ "$board_flash_flag" == "512" ] ; then
+        BOARD_FLASH="0x7FFFF"
+        BOARD_maximum_size="516096"
+        echo "Board flash size :   $board_flash_flag Kb, $BOARD_maximum_size bytes, $BOARD_FLASH (hex)"
+    elif [ "$board_flash_flag" == "1024" ] ; then
+        BOARD_FLASH="0xFFFFF"
+        BOARD_maximum_size="1040384"
+        echo "Board flash size :   $board_flash_flag Kb, $BOARD_maximum_size bytes, $BOARD_FLASH (hex)"
+    elif [[ "$board_flash_flag" == "32M" || "$board_flash_flag" == "32768" ]] ; then
+        BOARD_FLASH="0x1FFFFFF"
+        BOARD_maximum_size="33546240"
+        echo "Board flash size :    32 Mb, $BOARD_maximum_size bytes, $BOARD_FLASH (hex)"
+    else
+        echo "Unsupported board flash size chosen. Only '256', '384', '512', '1024' and '32M' are allowed."
+        exit 7
+    fi
+fi
+
+#Check if Build is selected with argument '-x'
+if [ ! -z "$board_mem_flag" ] ; then
+    if [ "$board_mem_flag" == "8" ] ; then
+        BOARD_MEM="0x21FF"
+        echo "Board mem size   :     $board_mem_flag Kb, $BOARD_MEM (hex)"
+    elif [ "$board_mem_flag" == "64" ] ; then
+        BOARD_MEM="0xFFFF"
+        echo "Board mem size   :    $board_mem_flag Kb, $BOARD_MEM (hex)"
+    else
+        echo "Unsupported board mem size chosen. Only '8', '64' are allowed."
+        exit 8
+    fi
+fi
+
+#Check if Arduino IDE version is correct
+if [ ! -z "$IDE_flag" ]; then
+    if [[ "$IDE_flag" == "1.8.5" || "$IDE_flag" == "1.8.13" ]]; then
+        ARDUINO_ENV="${IDE_flag}"
+    else
+        ARDUINO_ENV="1.8.5"
+    fi
+else
+    ARDUINO_ENV="1.8.5"
+fi
 
 #### Set build environment 
-ARDUINO_ENV="1.8.5"
 BUILD_ENV="1.0.6"
 BOARD="prusa_einsy_rambo"
 BOARD_PACKAGE_NAME="PrusaResearch"
 BOARD_VERSION="1.0.3"
-#BOARD_URL="https://raw.githubusercontent.com/3d-gussner/Arduino_Boards/Prusa_Merge_v1.0.3/IDE_Board_Manager/package_prusa3d_index.json"
+#BOARD_URL="https://raw.githubusercontent.com/3d-gussner/Arduino_Boards/master/IDE_Board_Manager/package_prusa3d_index.json"
 BOARD_URL="https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/package_prusa3d_index.json"
 BOARD_FILENAME="prusa3dboards"
-#BOARD_FILE_URL="https://raw.githubusercontent.com/3d-gussner/Arduino_Boards/Prusa_Merge_v1.0.3/IDE_Board_Manager/prusa3dboards-1.0.3.tar.bz2"
+#BOARD_FILE_URL="https://raw.githubusercontent.com/3d-gussner/Arduino_Boards/master/IDE_Board_Manager/prusa3dboards-1.0.3.tar.bz2"
 BOARD_FILE_URL="https://raw.githubusercontent.com/prusa3d/Arduino_Boards/master/IDE_Board_Manager/prusa3dboards-1.0.3.tar.bz2"
 #PF_BUILD_FILE_URL="https://github.com/3d-gussner/PF-build-env-1/releases/download/$BUILD_ENV-WinLin/PF-build-env-WinLin-$BUILD_ENV.zip"
 PF_BUILD_FILE_URL="https://github.com/prusa3d/PF-build-env/releases/download/$BUILD_ENV-WinLin/PF-build-env-WinLin-$BUILD_ENV.zip"
@@ -270,6 +392,12 @@ echo ""
 echo "Arduino IDE :" $ARDUINO_ENV
 echo "Build env   :" $BUILD_ENV
 echo "Board       :" $BOARD
+if [ ! -z "$BOARD_FLASH" ] ; then
+    echo "Board flash :" $BOARD_FLASH
+fi
+if [ ! -z "$BOARD_MEM" ] ; then
+    echo "Board mem   :" $BOARD_MEM
+fi
 echo "Package name:" $BOARD_PACKAGE_NAME
 echo "Board v.    :" $BOARD_VERSION
 echo "Specific Lib:" $LIB
@@ -279,166 +407,166 @@ echo ""
 
 #Check if build exists and creates it if not
 if [ ! -d "../PF-build-dl" ]; then
-    mkdir ../PF-build-dl || exit 6
+    mkdir ../PF-build-dl || exit 9
 fi
 
-cd ../PF-build-dl || exit 7
+cd ../PF-build-dl || exit 10
 BUILD_ENV_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
 
 # Check if PF-build-env-<version> exists and downloads + creates it if not
 # The build environment is based on the supported Arduino IDE portable version with some changes
 if [ ! -d "../PF-build-env-$BUILD_ENV" ]; then
-	echo "$(tput setaf 6)PF-build-env-$BUILD_ENV is missing ... creating it now for you$(tput sgr 0)"
-	mkdir ../PF-build-env-$BUILD_ENV
-	sleep 5
+    echo "$(tput setaf 6)PF-build-env-$BUILD_ENV is missing ... creating it now for you$(tput sgr 0)"
+    mkdir ../PF-build-env-$BUILD_ENV
+    sleep 5
 fi
 
 # Download and extract supported Arduino IDE depending on OS
 # Windows
 if [ $TARGET_OS == "windows" ]; then
-	if [ ! -f "arduino-$ARDUINO_ENV-windows.zip" ]; then
-		echo "$(tput setaf 6)Downloading Windows 32/64-bit Arduino IDE portable...$(tput setaf 2)"
-		sleep 2
-		wget https://downloads.arduino.cc/arduino-$ARDUINO_ENV-windows.zip || exit 8
-		echo "$(tput sgr 0)"
-	fi
-	if [[ ! -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" && ! -e "../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]]; then
-		echo "$(tput setaf 6)Unzipping Windows 32/64-bit Arduino IDE portable...$(tput setaf 2)"
-		sleep 2
-		unzip arduino-$ARDUINO_ENV-windows.zip -d ../PF-build-env-$BUILD_ENV || exit 8
-		mv ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor
-		echo "# arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
-		echo "$(tput sgr0)"
-	fi
+    if [ ! -f "arduino-$ARDUINO_ENV-windows.zip" ]; then
+        echo "$(tput setaf 6)Downloading Windows 32/64-bit Arduino IDE portable...$(tput setaf 2)"
+        sleep 2
+        wget https://downloads.arduino.cc/arduino-$ARDUINO_ENV-windows.zip || exit 8
+        echo "$(tput sgr 0)"
+    fi
+    if [[ ! -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" && ! -e "../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]]; then
+        echo "$(tput setaf 6)Unzipping Windows 32/64-bit Arduino IDE portable...$(tput setaf 2)"
+        sleep 2
+        unzip arduino-$ARDUINO_ENV-windows.zip -d ../PF-build-env-$BUILD_ENV || exit 9
+        mv ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor
+        echo "# arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+        echo "$(tput sgr0)"
+    fi
 fi
 # Linux
 if [ $TARGET_OS == "linux" ]; then
 # 32 or 64 bit version
-	if [ ! -f "arduino-$ARDUINO_ENV-linux$Processor.tar.xz" ]; then
-		echo "$(tput setaf 6)Downloading Linux $Processor Arduino IDE portable...$(tput setaf 2)"
-		sleep 2
-		wget --no-check-certificate https://downloads.arduino.cc/arduino-$ARDUINO_ENV-linux$Processor.tar.xz || exit 8
-		echo "$(tput sgr 0)"
-	fi
-	if [[ ! -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" && ! -e "../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]]; then
-		echo "$(tput setaf 6)Unzipping Linux $Processor Arduino IDE portable...$(tput setaf 2)"
-		sleep 2
-		tar -xvf arduino-$ARDUINO_ENV-linux$Processor.tar.xz -C ../PF-build-env-$BUILD_ENV/ || exit 8
-		mv ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor
-		echo "# arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
-		echo "$(tput sgr0)"
-	fi
+    if [ ! -f "arduino-$ARDUINO_ENV-linux$Processor.tar.xz" ]; then
+        echo "$(tput setaf 6)Downloading Linux $Processor Arduino IDE portable...$(tput setaf 2)"
+        sleep 2
+        wget --no-check-certificate https://downloads.arduino.cc/arduino-$ARDUINO_ENV-linux$Processor.tar.xz || exit 8
+        echo "$(tput sgr 0)"
+    fi
+    if [[ ! -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" && ! -e "../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]]; then
+        echo "$(tput setaf 6)Unzipping Linux $Processor Arduino IDE portable...$(tput setaf 2)"
+        sleep 2
+        tar -xvf arduino-$ARDUINO_ENV-linux$Processor.tar.xz -C ../PF-build-env-$BUILD_ENV/ || exit 9
+        mv ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor
+        echo "# arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/arduino-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+        echo "$(tput sgr0)"
+    fi
 fi
 # Make Arduino IDE portable
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/
 fi
 
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable
 fi
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/output/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/output
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/output
 fi
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages
 fi
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/sketchbook/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/sketchbook
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/sketchbook
 fi
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/sketchbook/libraries/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/sketchbook/libraries
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/sketchbook/libraries
 fi
 if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/staging/ ]; then
-	mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/staging
+    mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/staging
 fi
 
 # Change Arduino IDE preferences
 if [ ! -e ../PF-build-env-$BUILD_ENV/Preferences-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt ]; then
-	echo "$(tput setaf 6)Setting $ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor Arduino IDE preferences for portable GUI usage...$(tput setaf 2)"
-	sleep 2
-	echo "update.check"
-	sed -i 's/update.check = true/update.check = false/g' ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "board"
-	sed -i "s/board = uno/board = $BOARD/g" ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "editor.linenumbers"
-	sed -i 's/editor.linenumbers = false/editor.linenumbers = true/g' ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "boardsmanager.additional.urls"
-	echo "boardsmanager.additional.urls=$BOARD_URL" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "build.verbose=true" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "compiler.cache_core=false" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "compiler.warning_level=all" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
-	echo "# Preferences-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/Preferences-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
-	echo "$(tput sgr0)"
+    echo "$(tput setaf 6)Setting $ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor Arduino IDE preferences for portable GUI usage...$(tput setaf 2)"
+    sleep 2
+    echo "update.check"
+    sed -i 's/update.check = true/update.check = false/g' ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "board"
+    sed -i "s/board = uno/board = $BOARD/g" ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "editor.linenumbers"
+    sed -i 's/editor.linenumbers = false/editor.linenumbers = true/g' ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "boardsmanager.additional.urls"
+    echo "boardsmanager.additional.urls=$BOARD_URL" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "build.verbose=true" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "compiler.cache_core=false" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "compiler.warning_level=all" >>../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/lib/preferences.txt
+    echo "# Preferences-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor" >> ../PF-build-env-$BUILD_ENV/Preferences-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+    echo "$(tput sgr0)"
 fi
 
 # Download and extract Prusa Firmware related parts
 # Download and extract PrusaResearchRambo board
 if [ ! -f "$BOARD_FILENAME-$BOARD_VERSION.tar.bz2" ]; then
-	echo "$(tput setaf 6)Downloading Prusa Research AVR MK3 RAMBo EINSy build environment...$(tput setaf 2)"
-	sleep 2
-	wget $BOARD_FILE_URL || exit 9
+    echo "$(tput setaf 6)Downloading Prusa Research AVR MK3 RAMBo EINSy build environment...$(tput setaf 2)"
+    sleep 2
+    wget $BOARD_FILE_URL || exit 10
 fi
 if [[ ! -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION" || ! -e "../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]]; then
-	echo "$(tput setaf 6)Unzipping $BOARD_PACKAGE_NAME Arduino IDE portable...$(tput setaf 2)"
-	sleep 2
-	tar -xvf $BOARD_FILENAME-$BOARD_VERSION.tar.bz2 -C ../PF-build-env-$BUILD_ENV/ || exit 10
-	if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME ]; then
-		mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME
-	fi
-	if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME ]; then
-		mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME
-	fi
-	if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware ]; then
-		mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware
-	fi
-	if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr ]; then
-		mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr
-	fi
-	
-	mv ../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$BOARD_VERSION ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION
-	echo "# $BOARD_FILENAME-$BOARD_VERSION" >> ../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+    echo "$(tput setaf 6)Unzipping $BOARD_PACKAGE_NAME Arduino IDE portable...$(tput setaf 2)"
+    sleep 2
+    tar -xvf $BOARD_FILENAME-$BOARD_VERSION.tar.bz2 -C ../PF-build-env-$BUILD_ENV/ || exit 11
+    if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME ]; then
+        mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME
+    fi
+    if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME ]; then
+        mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME
+    fi
+    if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware ]; then
+        mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware
+    fi
+    if [ ! -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr ]; then
+        mkdir ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr
+    fi
+    
+    mv ../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$BOARD_VERSION ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION
+    echo "# $BOARD_FILENAME-$BOARD_VERSION" >> ../PF-build-env-$BUILD_ENV/$BOARD_FILENAME-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
 
-	echo "$(tput sgr 0)"
-fi	
+    echo "$(tput sgr 0)"
+fi    
 
 # Download and extract Prusa Firmware specific library files
 if [ ! -f "PF-build-env-WinLin-$BUILD_ENV.zip" ]; then
-	echo "$(tput setaf 6)Downloading Prusa Firmware build environment...$(tput setaf 2)"
-	sleep 2
-	wget $PF_BUILD_FILE_URL || exit 11
-	echo "$(tput sgr 0)"
+    echo "$(tput setaf 6)Downloading Prusa Firmware build environment...$(tput setaf 2)"
+    sleep 2
+    wget $PF_BUILD_FILE_URL || exit 12
+    echo "$(tput sgr 0)"
 fi
 if [ ! -e "../PF-build-env-$BUILD_ENV/PF-build-env-$BUILD_ENV-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt" ]; then
-	echo "$(tput setaf 6)Unzipping Prusa Firmware build environment...$(tput setaf 2)"
-	sleep 2
-	unzip -o PF-build-env-WinLin-$BUILD_ENV.zip -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor || exit 12
-	echo "# PF-build-env-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor-$BUILD_ENV" >> ../PF-build-env-$BUILD_ENV/PF-build-env-$BUILD_ENV-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
-	echo "$(tput sgr0)"
+    echo "$(tput setaf 6)Unzipping Prusa Firmware build environment...$(tput setaf 2)"
+    sleep 2
+    unzip -o PF-build-env-WinLin-$BUILD_ENV.zip -d ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor || exit 13
+    echo "# PF-build-env-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor-$BUILD_ENV" >> ../PF-build-env-$BUILD_ENV/PF-build-env-$BUILD_ENV-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+    echo "$(tput sgr0)"
 fi
 
 # Check if User updated Arduino IDE 1.8.5 boardsmanager and tools
 if [ -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/arduino/tools" ]; then
-	echo "$(tput setaf 6)Arduino IDE boards / tools have been manually updated...$"
-	echo "Please don't update the 'Arduino AVR boards' as this will prevent running this script (tput setaf 2)"
-	sleep 2
-fi	
+    echo "$(tput setaf 6)Arduino IDE boards / tools have been manually updated...$"
+    echo "Please don't update the 'Arduino AVR boards' as this will prevent running this script (tput setaf 2)"
+    sleep 2
+fi    
 if [ -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2" ]; then
-	echo "$(tput setaf 6)PrusaReasearch compatible tools have been manually updated...$(tput setaf 2)"
-	sleep 2
-	echo "$(tput setaf 6)Copying Prusa Firmware build environment to manually updated boards / tools...$(tput setaf 2)"
-	sleep 2
-	cp -f ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/hardware/tools/avr/avr/lib/ldscripts/avr6.xn ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/avr/lib/ldscripts/avr6.xn
-	echo "# PF-build-env-portable-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor-$BUILD_ENV" >> ../PF-build-env-$BUILD_ENV/PF-build-env-portable-$BUILD_ENV-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
-	echo "$(tput sgr0)"
-fi	
+    echo "$(tput setaf 6)PrusaReasearch compatible tools have been manually updated...$(tput setaf 2)"
+    sleep 2
+    echo "$(tput setaf 6)Copying Prusa Firmware build environment to manually updated boards / tools...$(tput setaf 2)"
+    sleep 2
+    cp -f ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/hardware/tools/avr/avr/lib/ldscripts/avr6.xn ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/avr/lib/ldscripts/avr6.xn
+    echo "# PF-build-env-portable-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor-$BUILD_ENV" >> ../PF-build-env-$BUILD_ENV/PF-build-env-portable-$BUILD_ENV-$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor.txt
+    echo "$(tput sgr0)"
+fi    
 if [ -d "../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor/portable/packages/arduino/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2" ]; then
-	echo "$(tput setaf 1)Arduino IDE tools have been updated manually to a non supported version!!!"
-	echo "Delete ../PF-build-env-$BUILD_ENV and start the script again"
-	echo "Script will not continue until this have been fixed $(tput setaf 2)"
-	sleep 2
-	echo "$(tput sgr0)"
-	exit 13
+    echo "$(tput setaf 1)Arduino IDE tools have been updated manually to a non supported version!!!"
+    echo "Delete ../PF-build-env-$BUILD_ENV and start the script again"
+    echo "Script will not continue until this have been fixed $(tput setaf 2)"
+    sleep 2
+    echo "$(tput sgr0)"
+    exit 14
 fi
 
 
@@ -450,113 +578,54 @@ cd $SCRIPT_PATH
 
 # Check if git is available
 if type git > /dev/null; then
-	git_available="1"
-fi
-
-while getopts v:l:d:b:o:c:p:n:?h flag
-	do
-	    case "${flag}" in
-	        v) variant_flag=${OPTARG};;
-	        l) language_flag=${OPTARG};;
-	        d) devel_flag=${OPTARG};;
-			b) build_flag=${OPTARG};;
-			o) output_flag=${OPTARG};;
-			c) clean_flag=${OPTARG};;
-			p) prusa_flag=${OPTARG};;
-			n) new_build_flag=${OPTARG};;
-			?) help_flag=1;;
-			h) help_flag=1;;
-	    esac
-	done
-#echo "variant_flag: $variant_flag";
-#echo "language_flag: $language_flag";
-#echo "devel_flag: $devel_flag";
-#echo "build_flag: $build_flag";
-#echo "output_flag: $output_flag";
-#echo "help_flag: $help_flag"
-#echo "clean_flag: $clean_flag"
-#echo "prusa_flag: $prusa_flag"
-#echo "new_build_flag: $new_build_flag"
-
-#
-# '?' 'h' argument usage and help
-if [ "$help_flag" == "1" ] ; then
-echo "***************************************"
-echo "* PF-build.sh Version: 1.0.6-Build_33 *"
-echo "***************************************"
-echo "Arguments:"
-echo "$(tput setaf 2)-v$(tput sgr0) Variant '$(tput setaf 2)All$(tput sgr0)' or variant file name"
-echo "$(tput setaf 2)-l$(tput sgr0) Languages '$(tput setaf 2)ALL$(tput sgr0)' for multi language or '$(tput setaf 2)EN_ONLY$(tput sgr0)' for English only"
-echo "$(tput setaf 2)-d$(tput sgr0) Devel build '$(tput setaf 2)GOLD$(tput sgr0)', '$(tput setaf 2)RC$(tput sgr0)', '$(tput setaf 2)BETA$(tput sgr0)', '$(tput setaf 2)ALPHA$(tput sgr0)', '$(tput setaf 2)DEBUG$(tput sgr0)', '$(tput setaf 2)DEVEL$(tput sgr0)' and '$(tput setaf 2)UNKNOWN$(tput sgr0)'"
-echo "$(tput setaf 2)-b$(tput sgr0) Build/commit number '$(tput setaf 2)Auto$(tput sgr0)' needs git or a number"
-echo "$(tput setaf 2)-o$(tput sgr0) Output '$(tput setaf 2)1$(tput sgr0)' force or '$(tput setaf 2)0$(tput sgr0)' block output and delays"
-echo "$(tput setaf 2)-c$(tput sgr0) Do not clean up lang build'$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes"
-echo "$(tput setaf 2)-p$(tput sgr0) Keep Configuration_prusa.h '$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes"
-echo "$(tput setaf 2)-n$(tput sgr0) New fresh build '$(tput setaf 2)0$(tput sgr0)' no '$(tput setaf 2)1$(tput sgr0)' yes"
-echo "$(tput setaf 2)-?$(tput sgr0) Help"
-echo "$(tput setaf 2)-h$(tput sgr0) Help"
-echo 
-echo "Brief USAGE:"
-echo "  $(tput setaf 2)./PF-build.sh$(tput sgr0)  [-v] [-l] [-d] [-b] [-o] [-c] [-p] [-n]"
-echo
-echo "Example:"
-echo "  $(tput setaf 2)./PF-build.sh -v All -l ALL -d GOLD$(tput sgr0)"
-echo "  Will build all variants as multi language and final GOLD version"
-echo
-echo "  $(tput setaf 2) ./PF-build.sh -v 1_75mm_MK3S-EINSy10a-E3Dv6full.h -b Auto -l ALL -d GOLD -o 1 -c 1 -p 1 -n 1$(tput sgr0)"
-echo "  Will build MK3S multi language final GOLD firmware "
-echo "  with current commit count number and output extra information,"
-echo "  not delete lang build temporary files, keep Configuration_prusa.h and build with new fresh build folder."
-echo
-exit 14
-
+    git_available="1"
 fi
 
 #
 # '-v' argument defines which variant of the Prusa Firmware will be compiled 
 if [ -z "$variant_flag" ] ; then
-	# Select which variant of the Prusa Firmware will be compiled, like
-	PS3="Select a variant: "
-	while IFS= read -r -d $'\0' f; do
-		options[i++]="$f"
-	done < <(find Firmware/variants/ -maxdepth 1 -type f -name "*.h" -print0 )
-	select opt in "${options[@]}" "All" "Quit"; do
-		case $opt in
-			*.h)
-				VARIANT=$(basename "$opt" ".h")
-				VARIANTS[i++]="$opt"
-				break
-				;;
-			"All")
-				VARIANT="All"
-				VARIANTS=${options[*]}
-				break
-				;;
-			"Quit")
-				echo "You chose to stop"
-					exit 20
-					;;
-			*)
-				echo "$(tput setaf 1)This is not a valid variant$(tput sgr0)"
-				;;
-		esac
-	done
+    # Select which variant of the Prusa Firmware will be compiled, like
+    PS3="Select a variant: "
+    while IFS= read -r -d $'\0' f; do
+        options[i++]="$f"
+    done < <(find Firmware/variants/ -maxdepth 1 -type f -name "*.h" -print0 )
+    select opt in "${options[@]}" "All" "Quit"; do
+        case $opt in
+            *.h)
+                VARIANT=$(basename "$opt" ".h")
+                VARIANTS[i++]="$opt"
+                break
+                ;;
+            "All")
+                VARIANT="All"
+                VARIANTS=${options[*]}
+                break
+                ;;
+            "Quit")
+                echo "You chose to stop"
+                    exit 22
+                    ;;
+            *)
+                echo "$(tput setaf 1)This is not a valid variant$(tput sgr0)"
+                ;;
+        esac
+    done
 else
-	if [ -f "$SCRIPT_PATH/Firmware/variants/$variant_flag" ] ; then 
-		VARIANTS=$variant_flag
-	elif [ "$variant_flag" == "All" ] ; then
-		while IFS= read -r -d $'\0' f; do
-			options[i++]="$f"
-		done < <(find Firmware/variants/ -maxdepth 1 -type f -name "*.h" -print0 )
-		VARIANT="All"
-		VARIANTS=${options[*]}
-	else
-		echo "$(tput setaf 1)Argument $variant_flag could not be found in Firmware/variants please choose a valid one.$(tput sgr0)"
-		echo "Only $(tput setaf 2)'All'$(tput sgr0) and file names below are allowed as variant '-v' argument.$(tput setaf 2)"
-		ls -1 $SCRIPT_PATH/Firmware/variants/*.h | xargs -n1 basename
-		echo "$(tput sgr0)"
-		exit 21
-	fi
+    if [ -f "$SCRIPT_PATH/Firmware/variants/$variant_flag" ] ; then 
+        VARIANTS=$variant_flag
+    elif [ "$variant_flag" == "All" ] ; then
+        while IFS= read -r -d $'\0' f; do
+            options[i++]="$f"
+        done < <(find Firmware/variants/ -maxdepth 1 -type f -name "*.h" -print0 )
+        VARIANT="All"
+        VARIANTS=${options[*]}
+    else
+        echo "$(tput setaf 1)Argument $variant_flag could not be found in Firmware/variants please choose a valid one.$(tput sgr0)"
+        echo "Only $(tput setaf 2)'All'$(tput sgr0) and file names below are allowed as variant '-v' argument.$(tput setaf 2)"
+        ls -1 $SCRIPT_PATH/Firmware/variants/*.h | xargs -n1 basename
+        echo "$(tput sgr0)"
+        exit 23
+    fi
 fi
 
 #'-l' argument defines if it is an English only version. Known values EN_ONLY / ALL
@@ -564,394 +633,564 @@ fi
 MULTI_LANGUAGE_CHECK=$(grep --max-count=1 "^#define LANG_MODE *" $SCRIPT_PATH/Firmware/config.h|sed -e's/  */ /g'|cut -d ' ' -f3)
 
 if [ -z "$language_flag" ] ; then
-	PS3="Select a language: "
-	echo
-	echo "Which lang-build do you want?"
-	select yn in "Multi languages" "English only"; do
-		case $yn in
-			"Multi languages")
-				LANGUAGES="ALL"
-				break
-				;;
-			"English only") 
-				LANGUAGES="EN_ONLY"
-				break
-				;;
-			*)
-				echo "$(tput setaf 1)This is not a valid language$(tput sgr0)"
-				;;
-		esac
-	done
+    PS3="Select a language: "
+    echo
+    echo "Which lang-build do you want?"
+    select yn in "Multi languages" "English only"; do
+        case $yn in
+            "Multi languages")
+                LANGUAGES="ALL"
+                break
+                ;;
+            "English only") 
+                LANGUAGES="EN_ONLY"
+                break
+                ;;
+            *)
+                echo "$(tput setaf 1)This is not a valid language$(tput sgr0)"
+                ;;
+        esac
+    done
 else
-	if [[ "$language_flag" == "ALL" || "$language_flag" == "EN_ONLY" ]] ; then
-		LANGUAGES=$language_flag
-	else
-		echo "$(tput setaf 1)Language argument is wrong!$(tput sgr0)"
-		echo "Only $(tput setaf 2)'ALL'$(tput sgr0) or $(tput setaf 2)'EN_ONLY'$(tput sgr0) are allowed as language '-l' argument!"
-		exit 22
-	fi
+    if [[ "$language_flag" == "ALL" || "$language_flag" == "EN_ONLY" ]] ; then
+        LANGUAGES=$language_flag
+    else
+        echo "$(tput setaf 1)Language argument is wrong!$(tput sgr0)"
+        echo "Only $(tput setaf 2)'ALL'$(tput sgr0) or $(tput setaf 2)'EN_ONLY'$(tput sgr0) are allowed as language '-l' argument!"
+        exit 24
+    fi
 fi
 #Check if DEV_STATUS is selected via argument '-d'
 if [ ! -z "$devel_flag" ] ; then
-	if [[ "$devel_flag" == "GOLD" || "$devel_flag" == "RC" || "$devel_flag" == "BETA" || "$devel_flag" == "ALPHA" || "$devel_flag" == "DEVEL" || "$devel_flag" == "DEBUG" || "$devel_flag" == "UNKNOWN" ]] ; then
-		DEV_STATUS_SELECTED=$devel_flag
-	else
-		echo "$(tput setaf 1)Development argument is wrong!$(tput sgr0)"
-		echo "Only $(tput setaf 2)'GOLD', 'RC', 'BETA', 'ALPHA', 'DEVEL', 'DEBUG' or 'UNKNOWN' $(tput sgr0) are allowed as devel '-d' argument!$(tput sgr0)"
-		exit 23
-	fi
+    if [[ "$devel_flag" == "GOLD" || "$devel_flag" == "RC" || "$devel_flag" == "BETA" || "$devel_flag" == "ALPHA" || "$devel_flag" == "DEVEL" || "$devel_flag" == "DEBUG" || "$devel_flag" == "UNKNOWN" ]] ; then
+        DEV_STATUS_SELECTED=$devel_flag
+    elif [[ "$devel_flag" == "atmega404" || "$devel_flag" == "atmega404_no_bootloader" ]] ; then
+        MK404_DEBUG=$devel_flag
+    else
+        echo "$(tput setaf 1)Development argument is wrong!$(tput sgr0)"
+        echo "Only $(tput setaf 2)'GOLD', 'RC', 'BETA', 'ALPHA', 'DEVEL', 'DEBUG' or 'UNKNOWN' $(tput sgr0) are allowed as devel '-d' argument!$(tput sgr0)"
+        exit 25
+    fi
 fi
 
 #Check if Build is selected via argument '-b'
 if [ ! -z "$build_flag" ] ; then
-	if [[ "$build_flag" == "Auto" && "$git_available" == "1" ]] ; then
-		echo "Build changed to $build_flag"
-		BUILD=$(git rev-list --count HEAD)
-	elif [[ $build_flag =~ ^[0-9]+$ ]] ; then
-		BUILD=$build_flag
-	else
-		echo "$(tput setaf 1)Build number argument is wrong!$(tput sgr0)"
-		echo "Only $(tput setaf 2)'Auto' (git needed) or numbers $(tput sgr0) are allowed as build '-b' argument!$(tput sgr0)"
-		exit 24
+    if [[ "$build_flag" == "Auto" && "$git_available" == "1" ]] ; then
+        echo "Build changed to $build_flag"
+        BUILD=$(git rev-list --count HEAD)
+    elif [[ $build_flag =~ ^[0-9]+$ ]] ; then
+        BUILD=$build_flag
+    else
+        echo "$(tput setaf 1)Build number argument is wrong!$(tput sgr0)"
+        echo "Only $(tput setaf 2)'Auto' (git needed) or numbers $(tput sgr0) are allowed as build '-b' argument!$(tput sgr0)"
+        exit 26
 
-	fi
-	echo "New Build number is: $BUILD"
+    fi
+    echo "New Build number is: $BUILD"
 fi
 
 # check if script has been started with arguments 
 if [[ "$#" -eq  "0" || "$output_flag" == 1 ]] ; then
-	OUTPUT=1
+    OUTPUT=1
 else
-	OUTPUT=0
+    OUTPUT=0
 fi
 #echo "Output is:" $OUTPUT
 
 #Check git branch has changed
 if [ ! -z "git_available" ]; then
-	BRANCH=""
-	CLEAN_PF_FW_BUILD=0
+    BRANCH=""
+    CLEAN_PF_FW_BUILD=0
 else
-	BRANCH=$(git branch --show-current)
-	echo "Current branch is:" $BRANCH
-	if [ ! -f "$SCRIPT_PATH/../PF-build.branch" ]; then
-		echo "$BRANCH" >| $SCRIPT_PATH/../PF-build.branch
-		echo "created PF-build.branch file"
-	else
-		PRE_BRANCH=$(cat "$SCRIPT_PATH/../PF-build.branch")
-		echo "Previous branch was:" $PRE_BRANCH
-		if [ ! "$BRANCH" == "$PRE_BRANCH" ] ; then
-			CLEAN_PF_FW_BUILD=1
-			echo "$BRANCH" >| $SCRIPT_PATH/../PF-build.branch
-		fi
-	fi
+    BRANCH=$(git branch --show-current)
+    echo "Current branch is:" $BRANCH
+    if [ ! -f "$SCRIPT_PATH/../PF-build.branch" ]; then
+        echo "$BRANCH" >| $SCRIPT_PATH/../PF-build.branch
+        echo "created PF-build.branch file"
+    else
+        PRE_BRANCH=$(cat "$SCRIPT_PATH/../PF-build.branch")
+        echo "Previous branch was:" $PRE_BRANCH
+        if [ ! "$BRANCH" == "$PRE_BRANCH" ] ; then
+            CLEAN_PF_FW_BUILD=1
+            echo "$BRANCH" >| $SCRIPT_PATH/../PF-build.branch
+        fi
+    fi
 fi
 
 #Set BUILD_ENV_PATH
-cd ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor || exit 25
+cd ../PF-build-env-$BUILD_ENV/$ARDUINO_ENV-$BOARD_VERSION-$TARGET_OS-$Processor || exit 27
 BUILD_ENV_PATH="$( pwd -P )"
 
 cd ../..
 
 #Checkif BUILD_PATH exists and if not creates it
 if [ ! -d "Prusa-Firmware-build" ]; then
-    mkdir Prusa-Firmware-build  || exit 26
+    mkdir Prusa-Firmware-build  || exit 28
 fi
 
 #Set the BUILD_PATH for Arduino IDE
-cd Prusa-Firmware-build || exit 27
+cd Prusa-Firmware-build || exit 29
 BUILD_PATH="$( pwd -P )"
 
 #Check git branch has changed
 if [ "$CLEAN_PF_FW_BUILD" == "1" ]; then
-	read -t 10 -p "Branch changed, cleaning Prusa-Firmware-build folder"
-	rm -r *
+    read -t 10 -p "Branch changed, cleaning Prusa-Firmware-build folder"
+    rm -r *
 else
-	echo "Nothing to clean up"
+    echo "Nothing to clean up"
 fi
 
 for v in ${VARIANTS[*]}
 do
-	VARIANT=$(basename "$v" ".h")
-	# Find firmware version in Configuration.h file and use it to generate the hex filename
-	FW=$(grep --max-count=1 "\bFW_VERSION\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d '"' -f2|sed 's/\.//g')
-	if [ -z "$BUILD" ] ; then	
-		# Find build version in Configuration.h file and use it to generate the hex filename
-		BUILD=$(grep --max-count=1 "\bFW_COMMIT_NR\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d ' ' -f3)
-	else
-		# Find and replace build version in Configuration.h file
-		BUILD_ORG=$(grep --max-count=1 "\bFW_COMMIT_NR\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d ' ' -f3)
-		echo "Original build number: $BUILD_ORG"
-		sed -i -- "s/^#define FW_COMMIT_NR.*/#define FW_COMMIT_NR $BUILD/g" $SCRIPT_PATH/Firmware/Configuration.h
-	fi
-	# Check if the motherboard is an EINSY and if so only one hex file will generated
-	MOTHERBOARD=$(grep --max-count=1 "\bMOTHERBOARD\b" $SCRIPT_PATH/Firmware/variants/$VARIANT.h | sed -e's/  */ /g' |cut -d ' ' -f3)
-	# Check development status
-	DEV_CHECK=$(grep --max-count=1 "\bFW_VERSION\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d '"' -f2|sed 's/\.//g'|cut -d '-' -f2)
-	if [ -z "$DEV_STATUS_SELECTED" ] ; then
-		if [[ "$DEV_CHECK" == *"RC"* ]] ; then
-			DEV_STATUS="RC"
-		elif [[ "$DEV_CHECK" == "ALPHA" ]]; then
-			DEV_STATUS="ALPHA"
-		elif [[ "$DEV_CHECK" == "BETA" ]]; then
-			DEV_STATUS="BETA"
-		elif [[ "$DEV_CHECK" == "DEVEL" ]]; then
-			DEV_STATUS="DEVEL"
-		elif [[ "$DEV_CHECK" == "DEBUG" ]]; then
-			DEV_STATUS="DEBUG"
-		else
-			DEV_STATUS="UNKNOWN"
-			echo
-			echo "$(tput setaf 5)DEV_STATUS is UNKNOWN. Do you wish to set DEV_STATUS to GOLD?$(tput sgr0)"
-			PS3="Select YES only if source code is tested and trusted: "
-			select yn in "Yes" "No"; do
-				case $yn in
-					Yes)
-						DEV_STATUS="GOLD"
-						DEV_STATUS_SELECTED="GOLD"
-						break
-						;;
-					No) 
-						DEV_STATUS="UNKNOWN"
-						DEV_STATUS_SELECTED="UNKNOWN"
-						break
-						;;
-					*)
-						echo "$(tput setaf 1)This is not a valid DEV_STATUS$(tput sgr0)"
-						;;
-				esac
-			done
-		fi
-	else
-		DEV_STATUS=$DEV_STATUS_SELECTED
-	fi
-	#Prepare hex files folders
-	if [ ! -d "$SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD" ]; then
-		mkdir -p $SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD || exit 28
-	fi
-	OUTPUT_FOLDER="PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD"
-	
-	#Check if exactly the same hexfile already exists
-	if [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex"  &&  "$LANGUAGES" == "ALL" ]]; then
-		echo ""
-		ls -1 $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex | xargs -n1 basename
-		echo "$(tput setaf 6)This hex file to be compiled already exists! To cancel this process press CRTL+C and rename existing hex file.$(tput sgr 0)"
-		if [ $OUTPUT == "1" ] ; then
-			read -t 10 -p "Press Enter to continue..."
-		fi
-	elif [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex"  &&  "$LANGUAGES" == "EN_ONLY" ]]; then
-		echo ""
-		ls -1 $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex | xargs -n1 basename
-		echo "$(tput setaf 6)This hex file to be compiled already exists! To cancel this process press CRTL+C and rename existing hex file.$(tput sgr 0)"
-		if [ $OUTPUT == "1" ] ; then
-			read -t 10 -p "Press Enter to continue..."
-		fi
-	fi
-	if [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip"  &&  "$LANGUAGES" == "ALL" ]]; then
-		echo ""
-		ls -1 $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip | xargs -n1 basename
-		echo "$(tput setaf 6)This zip file to be compiled already exists! To cancel this process press CRTL+C and rename existing hex file.$(tput sgr 0)"
-		if [ $OUTPUT == "1" ] ; then
-			read -t 10 -p "Press Enter to continue..."
-		fi
-	fi
-	
-	#List some useful data
-	echo "$(tput setaf 2)$(tput setab 7) "
-	echo "Variant    :" $VARIANT
-	echo "Firmware   :" $FW
-	echo "Build #    :" $BUILD
-	echo "Dev Check  :" $DEV_CHECK
-	echo "DEV Status :" $DEV_STATUS
-	echo "Motherboard:" $MOTHERBOARD
-	echo "Languages  :" $LANGUAGES
-	echo "Hex-file Folder:" $OUTPUT_FOLDER
-	echo "$(tput sgr0)"
+    VARIANT=$(basename "$v" ".h")
+    MK404_PRINTER=$(grep --max-count=1 "\bPRINTER_TYPE\b" $SCRIPT_PATH/Firmware/variants/$VARIANT.h | sed -e's/  */ /g' |cut -d ' ' -f3 | cut -d '_' -f2)
+    # Find firmware version in Configuration.h file and use it to generate the hex filename
+    FW=$(grep --max-count=1 "\bFW_VERSION\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d '"' -f2|sed 's/\.//g')
+    if [ -z "$BUILD" ] ; then    
+        # Find build version in Configuration.h file and use it to generate the hex filename
+        BUILD=$(grep --max-count=1 "\bFW_COMMIT_NR\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d ' ' -f3)
+    else
+        # Find and replace build version in Configuration.h file
+        BUILD_ORG=$(grep --max-count=1 "\bFW_COMMIT_NR\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d ' ' -f3)
+        echo "Original build number: $BUILD_ORG"
+        sed -i -- "s/^#define FW_COMMIT_NR.*/#define FW_COMMIT_NR $BUILD/g" $SCRIPT_PATH/Firmware/Configuration.h
+    fi
+    # Check if the motherboard is an EINSY and if so only one hex file will generated
+    MOTHERBOARD=$(grep --max-count=1 "\bMOTHERBOARD\b" $SCRIPT_PATH/Firmware/variants/$VARIANT.h | sed -e's/  */ /g' |cut -d ' ' -f3)
+    # Check development status
+    DEV_CHECK=$(grep --max-count=1 "\bFW_VERSION\b" $SCRIPT_PATH/Firmware/Configuration.h | sed -e's/  */ /g'|cut -d '"' -f2|sed 's/\.//g'|cut -d '-' -f2)
+    if [ -z "$DEV_STATUS_SELECTED" ] ; then
+        if [[ "$DEV_CHECK" == *"RC"* ]] ; then
+            DEV_STATUS="RC"
+        elif [[ "$DEV_CHECK" == "ALPHA" ]]; then
+            DEV_STATUS="ALPHA"
+        elif [[ "$DEV_CHECK" == "BETA" ]]; then
+            DEV_STATUS="BETA"
+        elif [[ "$DEV_CHECK" == "DEVEL" ]]; then
+            DEV_STATUS="DEVEL"
+        elif [[ "$DEV_CHECK" == "DEBUG" ]]; then
+            DEV_STATUS="DEBUG"
+        else
+            DEV_STATUS="UNKNOWN"
+            echo
+            echo "$(tput setaf 5)DEV_STATUS is UNKNOWN. Do you wish to set DEV_STATUS to GOLD?$(tput sgr0)"
+            PS3="Select YES only if source code is tested and trusted: "
+            select yn in "Yes" "No"; do
+                case $yn in
+                    Yes)
+                        DEV_STATUS="GOLD"
+                        DEV_STATUS_SELECTED="GOLD"
+                        break
+                        ;;
+                    No)
+                        DEV_STATUS="UNKNOWN"
+                        DEV_STATUS_SELECTED="UNKNOWN"
+                        break
+                        ;;
+                    *)
+                        echo "$(tput setaf 1)This is not a valid DEV_STATUS$(tput sgr0)"
+                        ;;
+                esac
+            done
+        fi
+    else
+        DEV_STATUS=$DEV_STATUS_SELECTED
+    fi
+    #Prepare hex files folders
+    if [ ! -d "$SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD" ]; then
+        mkdir -p $SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD || exit 28
+    fi
+    OUTPUT_FOLDER="PF-build-hex/FW$FW-Build$BUILD/$MOTHERBOARD"
+    if [ "$BOARD" != "prusa_einsy_rambo" ]; then
+        if [ ! -d "$SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$BOARD" ]; then
+            mkdir -p $SCRIPT_PATH/../PF-build-hex/FW$FW-Build$BUILD/$BOARD || exit 28
+        fi
+        OUTPUT_FOLDER="PF-build-hex/FW$FW-Build$BUILD/$BOARD"
+    fi
+    
+    #Check if exactly the same hexfile already exists
+    if [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex"  &&  "$LANGUAGES" == "ALL" ]]; then
+        echo ""
+        ls -1 $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex | xargs -n1 basename
+        echo "$(tput setaf 6)This hex file to be compiled already exists! To cancel this process press CRTL+C and rename existing hex file.$(tput sgr 0)"
+        if [ $OUTPUT == "1" ] ; then
+            read -t 10 -p "Press Enter to continue..."
+        fi
+    elif [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex"  &&  "$LANGUAGES" == "EN_ONLY" ]]; then
+        echo ""
+        ls -1 $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex | xargs -n1 basename
+        echo "$(tput setaf 6)This hex file to be compiled already exists! To cancel this process press CRTL+C and rename existing hex file.$(tput sgr 0)"
+        if [ $OUTPUT == "1" ] ; then
+            read -t 10 -p "Press Enter to continue..."
+        fi
+    fi
+    if [[ -f "$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip"  &&  "$LANGUAGES" == "ALL" ]]; then
+        echo ""
+        ls -1 $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip | xargs -n1 basename
+        echo "$(tput setaf 6)This zip file to be compiled already exists! To cancel this process press CRTL+C and rename existing hex file.$(tput sgr 0)"
+        if [ $OUTPUT == "1" ] ; then
+            read -t 10 -p "Press Enter to continue..."
+        fi
+    fi
+    
+    #List some useful data
+    echo "$(tput setaf 2)$(tput setab 7) "
+    echo "Printer    :" $MK404_PRINTER
+    echo "Variant    :" $VARIANT
+    echo "Firmware   :" $FW
+    echo "Build #    :" $BUILD
+    echo "Dev Check  :" $DEV_CHECK
+    echo "DEV Status :" $DEV_STATUS
+    echo "Motherboard:" $MOTHERBOARD
+    echo "Board flash:" $BOARD_FLASH
+    echo "Board mem  :" $BOARD_MEM
+    echo "Languages  :" $LANGUAGES
+    echo "Hex-file Folder:" $OUTPUT_FOLDER
+    echo "$(tput sgr0)"
 
-	#Prepare Firmware to be compiled by copying variant as Configuration_prusa.h
-	if [ ! -f "$SCRIPT_PATH/Firmware/Configuration_prusa.h" ]; then
-		cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 29
-	else
-		echo "$(tput setaf 6)Configuration_prusa.h already exist it will be overwritten in 10 seconds by the chosen variant.$(tput sgr 0)"
-		if [ $OUTPUT == "1" ] ; then
-			read -t 10 -p "Press Enter to continue..."
-		fi
-		cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 29
-	fi
+    #Prepare Firmware to be compiled by copying variant as Configuration_prusa.h
+    if [ ! -f "$SCRIPT_PATH/Firmware/Configuration_prusa.h" ]; then
+        cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 31
+    else
+        echo "$(tput setaf 6)Configuration_prusa.h already exist it will be overwritten in 10 seconds by the chosen variant.$(tput sgr 0)"
+        if [ $OUTPUT == "1" ] ; then
+            read -t 10 -p "Press Enter to continue..."
+        fi
+        cp -f $SCRIPT_PATH/Firmware/variants/$VARIANT.h $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 31
+    fi
 
-	#Prepare Configuration.h to use the correct FW_DEV_VERSION to prevent LCD messages when connecting with OctoPrint
-	sed -i -- "s/#define FW_DEV_VERSION FW_VERSION_UNKNOWN/#define FW_DEV_VERSION FW_VERSION_$DEV_STATUS/g" $SCRIPT_PATH/Firmware/Configuration.h
+    #Prepare Configuration.h to use the correct FW_DEV_VERSION to prevent LCD messages when connecting with OctoPrint
+    sed -i -- "s/#define FW_DEV_VERSION FW_VERSION_UNKNOWN/#define FW_DEV_VERSION FW_VERSION_$DEV_STATUS/g" $SCRIPT_PATH/Firmware/Configuration.h
 
-	# set FW_REPOSITORY
-	sed -i -- 's/#define FW_REPOSITORY "Unknown"/#define FW_REPOSITORY "Prusa3d"/g' $SCRIPT_PATH/Firmware/Configuration.h
+    # set FW_REPOSITORY
+    sed -i -- 's/#define FW_REPOSITORY "Unknown"/#define FW_REPOSITORY "Prusa3d"/g' $SCRIPT_PATH/Firmware/Configuration.h
 
-	#Prepare English only or multi-language version to be build
-	if [ $LANGUAGES == "EN_ONLY" ]; then
-		echo " "
-		echo "English only language firmware will be built"
-		sed -i -- "s/^#define LANG_MODE *1/#define LANG_MODE              0/g" $SCRIPT_PATH/Firmware/config.h
-		echo " "
-	else
-		echo " "
-		echo "Multi-language firmware will be built"
-		sed -i -- "s/^#define LANG_MODE *0/#define LANG_MODE              1/g" $SCRIPT_PATH/Firmware/config.h
-		echo " "
-	fi
-		
-	#Check if compiler flags are set to Prusa specific needs for the rambo board.
-#	if [ $TARGET_OS == "windows" ]; then
-#		RAMBO_PLATFORM_FILE="PrusaResearchRambo/avr/platform.txt"
-#	fi	
-	
-	#### End of Prepare building
-		
-	#### Start building
-		
-	export ARDUINO=$BUILD_ENV_PATH
-	#echo $BUILD_ENV_PATH
-	#export BUILDER=$ARDUINO/arduino-builder
+    #Prepare English only or multi-language version to be build
+    if [ $LANGUAGES == "EN_ONLY" ]; then
+        echo " "
+        echo "English only language firmware will be built"
+        sed -i -- "s/^#define LANG_MODE *1/#define LANG_MODE              0/g" $SCRIPT_PATH/Firmware/config.h
+        echo " "
+    else
+        echo " "
+        echo "Multi-language firmware will be built"
+        sed -i -- "s/^#define LANG_MODE *0/#define LANG_MODE              1/g" $SCRIPT_PATH/Firmware/config.h
+        echo " "
+    fi
+        
+    #Check if compiler flags are set to Prusa specific needs for the rambo board.
+    #if [ $TARGET_OS == "windows" ]; then
+       #RAMBO_PLATFORM_FILE="PrusaResearchRambo/avr/platform.txt"
+    #fi    
 
-	echo
-	#read -t 5 -p "Press Enter..."
-	echo 
+    #New fresh PF-Firmware-build
+    if [ "$new_build_flag" == "1" ]; then
+        rm -r -f $BUILD_PATH/* || exit 54
+    fi
 
-	echo "Start to build Prusa Firmware ..."
-	echo "Using variant $VARIANT$(tput setaf 3)"
-	if [ $OUTPUT == "1" ] ; then
-		sleep 2
-	fi
+    # Prepare Board mem and flash modifications
+    ## Check board mem size
+    CURRENT_BOARD_MEM=$(grep "#define RAMEND" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h | sed -e's/.* //g'|cut -d ' ' -f3|tr -d $'\n')
+    if [ $CURRENT_BOARD_MEM != "0x21FF" ] ; then
+        echo "Board mem has been already modified or not reset"
+        echo "Current:" $CURRENT_BOARD_MEM
+        PS3="Select $(tput setaf 2)Yes$(tput sgr 0) if you want to reset it."
+        select yn in "Yes" "No"; do
+            case $yn in
+                Yes)
+                    echo "Resetting board mem size"
+                    sed -i -- "s/^#define RAMEND .*$/#define RAMEND          0x21FF/g" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h
+                    break
+                    ;;
+                *)
+                    echo "Continuing with modified mem size"
+                    break
+                    ;;
+            esac
+        done
+    fi
+    ## Modify board mem size
+    if [[ ! -z $BOARD_MEM && "$BOARD_MEM" != "0x21FF" ]] ; then
+        echo "$(tput setaf 3)Modifying board memory size (hex):$(tput sgr 0)"
+        echo "Old:" $CURRENT_BOARD_MEM
+        echo "New:" $BOARD_MEM
+        read -t 5 -p "To cancel press $(tput setaf 1)CRTL+C$(tput sgr 0)"
+        echo ""
+        sed -i -- "s/^#define RAMEND          0x21FF/#define RAMEND          ${BOARD_MEM}/g" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h
+    fi
 
-	#New fresh PF-Firmware-build
-	if [ "$new_build_flag" == "1" ]; then
-		rm -r -f $BUILD_PATH/* || exit 36
-	fi
+    ## Check board flash size
+    CURRENT_BOARD_FLASH=$(grep "#define FLASHEND" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h | sed -e's/.* //g'|cut -d ' ' -f3|tr -d $'\n')
+    CURRENT_BOARD_maximum_size=$(grep "prusa_einsy_rambo.upload.maximum_size" $BUILD_ENV_PATH/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION/boards.txt |cut -d '=' -f2|tr -d $'\n')
+    if [[ $CURRENT_BOARD_FLASH != "0x3FFFF" || $CURRENT_BOARD_maximum_size != "253952" ]] ; then
+        echo "Board flash has been already modified or not reset"
+        echo "Current flash size:" $CURRENT_BOARD_FLASH
+        echo "Current max.  size:" $CURRENT_BOARD_maximum_size
+        PS3="Select $(tput setaf 2)Yes$(tput sgr 0) if you want to reset it."
+        select yn in "Yes" "No"; do
+            case $yn in
+                Yes)
+                    echo "$(tput setaf 1)Resetting board flash size$(tput sgr 0)"
+                    sed -i -- "s/^#define FLASHEND .*$/#define FLASHEND        0x3FFFF/g" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h
+                    sed -i -- "s/^prusa_einsy_rambo.upload.maximum_size.*/prusa_einsy_rambo.upload.maximum_size=253952/g" $BUILD_ENV_PATH/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION/boards.txt
+                    break
+                    ;;
+                *)
+                    echo "$(tput setaf 3)Continuing with modified flash size$(tput sgr 0)"
+                    break
+                    ;;
+            esac
+        done
+    fi
+    ## Modify boad flash size
+    if [[ ! -z $BOARD_FLASH && "$BOARD_FLASH" != "0x3FFFF" ]] ; then
+        echo "Modifying board flash size (hex):"
+        echo "Old flash size:" $CURRENT_BOARD_FLASH
+        echo "New flash size:" $BOARD_FLASH
+        echo "Old max.  size:" $CURRENT_BOARD_maximum_size
+        echo "New max.  size:" $BOARD_maximum_size
+        read -t 5 -p "To cancel press $(tput setaf 1)CRTL+C$(tput sgr 0)"
+        sed -i -- "s/^#define FLASHEND .*/#define FLASHEND        ${BOARD_FLASH}/g" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h
+        sed -i -- "s/^prusa_einsy_rambo.upload.maximum_size.*/prusa_einsy_rambo.upload.maximum_size=${BOARD_maximum_size}/g" $BUILD_ENV_PATH/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION/boards.txt
+    fi
 
-	#$BUILD_ENV_PATH/arduino-builder -dump-prefs -debug-level 10 -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=$BOARD_PACKAGE_NAME:avr:$BOARD -build-path=$BUILD_PATH -warnings=all $SCRIPT_PATH/Firmware/Firmware.ino || exit 30
-	$BUILD_ENV_PATH/arduino-builder -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=$BOARD_PACKAGE_NAME:avr:$BOARD -build-path=$BUILD_PATH -warnings=all $SCRIPT_PATH/Firmware/Firmware.ino || exit 30
-	echo "$(tput sgr 0)"
+    #Check if compiler flags are set to Prusa specific needs for the rambo board.
+#    if [ $TARGET_OS == "windows" ]; then
+#        RAMBO_PLATFORM_FILE="PrusaResearchRambo/avr/platform.txt"
+#    fi    
+    
+    #### End of Prepare building
+        
+    #### Start building
+        
+    export ARDUINO=$BUILD_ENV_PATH
+    #echo $BUILD_ENV_PATH
+    #export BUILDER=$ARDUINO/arduino-builder
 
-	if [ $LANGUAGES ==  "ALL" ]; then
-		echo "$(tput setaf 2)"
+    echo
+    #read -t 5 -p "Press Enter..."
+    echo 
 
-		echo "Building multi language firmware" $MULTI_LANGUAGE_CHECK
-		echo "$(tput sgr 0)"
-		if [ $OUTPUT == "1" ] ; then
-			sleep 2
-		fi
-		cd $SCRIPT_PATH/lang
-		echo "$(tput setaf 3)"
-		./config.sh || exit 31
-		echo "$(tput sgr 0)"
-		# Check if previous languages and firmware build exist and if so clean them up
-		if [ -f "lang_en.tmp" ]; then
-			echo ""
-			echo "$(tput setaf 6)Previous lang build files already exist these will be cleaned up in 10 seconds.$(tput sgr 0)"
-			if [ $OUTPUT == "1" ] ; then
-				read -t 10 -p "Press Enter to continue..."
-			fi
-			echo "$(tput setaf 3)"
-			./lang-clean.sh
-			echo "$(tput sgr 0)"
-		fi
-		if [ -f "progmem.out" ]; then
-			echo ""
-			echo "$(tput setaf 6)Previous firmware build files already exist these will be cleaned up in 10 seconds.$(tput sgr 0)"
-			if [ $OUTPUT == "1" ] ; then
-				read -t 10 -p "Press Enter to continue..."
-			fi
-			echo "$(tput setaf 3)"
-			./fw-clean.sh
-			echo "$(tput sgr 0)"
-		fi
-		# build languages
-		echo "$(tput setaf 3)"
-		./lang-build.sh || exit 32
-		#Community language support
-		./lang-community.sh || exit 33
-		# Combine compiled firmware with languages 
-		./fw-build.sh || exit 34
-		cp not_tran.txt not_tran_$VARIANT.txt
-		cp not_used.txt not_used_$VARIANT.txt
-		echo "$(tput sgr 0)"
-		# Check if the motherboard is an EINSY and if so only one hex file will generated
-		MOTHERBOARD=$(grep --max-count=1 "\bMOTHERBOARD\b" $SCRIPT_PATH/Firmware/variants/$VARIANT.h | sed -e's/  */ /g' |cut -d ' ' -f3)
-		# If the motherboard is an EINSY just copy one hexfile
-		if [ "$MOTHERBOARD" = "BOARD_EINSY_1_0a" ]; then
-			echo "$(tput setaf 2)Copying multi language firmware for MK3/Einsy board to PF-build-hex folder$(tput sgr 0)"
-			cp -f firmware.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex
-		else
-			echo "$(tput setaf 2)Zip multi language firmware for MK2.5/miniRAMbo board to PF-build-hex folder$(tput sgr 0)"
-			cp -f firmware_cz.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-cz.hex
-			cp -f firmware_de.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-de.hex
-			cp -f firmware_es.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-es.hex
-			cp -f firmware_fr.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-fr.hex
-			cp -f firmware_it.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-it.hex
-			cp -f firmware_pl.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-pl.hex
-			cp -f firmware_nl.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-nl.hex
-			if [ $TARGET_OS == "windows" ]; then 
-				zip a $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
-				rm $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
-			elif [ $TARGET_OS == "linux" ]; then
-				zip -m -j ../../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip ../../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
-			fi
-		fi
-		# Cleanup after build
-		if [[ -z "$clean_flag" || "$clean_flag" == "0" ]]; then
-			echo "$(tput setaf 3)"
-			./fw-clean.sh || exit 35
-			./lang-clean.sh || exit 36
-			echo "$(tput sgr 0)"
-		fi
-	else
-		echo "$(tput setaf 2)Copying English only firmware to PF-build-hex folder$(tput sgr 0)"
-		cp -f $BUILD_PATH/Firmware.ino.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex || exit 37
-	fi
+    echo "Start to build Prusa Firmware ..."
+    echo "Using variant $VARIANT$(tput setaf 3)"
+    if [ $OUTPUT == "1" ] ; then
+        sleep 2
+    fi
 
-	# Cleanup Firmware
-	if [[ -z "$prusa_flag" || "$prusa_flag" == "0" ]]; then
-		rm $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 38
-	fi
-	if find $SCRIPT_PATH/lang/ -name '*RAMBo10a*.txt' -printf 1 -quit | grep -q 1
-	then
-		rm $SCRIPT_PATH/lang/*RAMBo10a*.txt
-	fi
-	if find $SCRIPT_PATH/lang/ -name '*MK2-RAMBo13a*' -printf 1 -quit | grep -q 1
-	then
-		rm $SCRIPT_PATH/lang/*MK2-RAMBo13a*.txt
-	fi
-	if find $SCRIPT_PATH/lang/ -name 'not_tran.txt' -printf 1 -quit | grep -q 1
-	then
-		rm $SCRIPT_PATH/lang/not_tran.txt
-	fi
-	if find $SCRIPT_PATH/lang/ -name 'not_used.txt' -printf 1 -quit | grep -q 1
-	then
-		rm $SCRIPT_PATH/lang/not_used.txt
-	fi
+    #$BUILD_ENV_PATH/arduino-builder -dump-prefs -debug-level 10 -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=$BOARD_PACKAGE_NAME:avr:$BOARD -build-path=$BUILD_PATH -warnings=all $SCRIPT_PATH/Firmware/Firmware.ino || exit 41
+    $BUILD_ENV_PATH/arduino-builder -compile -hardware $ARDUINO/hardware -hardware $ARDUINO/portable/packages -tools $ARDUINO/tools-builder -tools $ARDUINO/hardware/tools/avr -tools $ARDUINO/portable/packages -built-in-libraries $ARDUINO/libraries -libraries $ARDUINO/portable/sketchbook/libraries -fqbn=$BOARD_PACKAGE_NAME:avr:$BOARD -build-path=$BUILD_PATH -warnings=all $SCRIPT_PATH/Firmware/Firmware.ino || exit 42
+    echo "$(tput sgr 0)"
 
-	#New fresh PF-Firmware-build
-	if [ "$new_build_flag" == "1" ]; then
-		rm -r -f $BUILD_PATH/* || exit 39
-	fi
+    if [ $LANGUAGES ==  "ALL" ]; then
+        echo "$(tput setaf 2)"
+
+        echo "Building multi language firmware" $MULTI_LANGUAGE_CHECK
+        echo "$(tput sgr 0)"
+        if [ $OUTPUT == "1" ] ; then
+            sleep 2
+        fi
+        cd $SCRIPT_PATH/lang
+        echo "$(tput setaf 3)"
+        ./config.sh || exit 43
+        echo "$(tput sgr 0)"
+        # Check if previous languages and firmware build exist and if so clean them up
+        if [ -f "lang_en.tmp" ]; then
+            echo ""
+            echo "$(tput setaf 6)Previous lang build files already exist these will be cleaned up in 10 seconds.$(tput sgr 0)"
+            if [ $OUTPUT == "1" ] ; then
+                read -t 10 -p "Press Enter to continue..."
+            fi
+            echo "$(tput setaf 3)"
+            ./lang-clean.sh
+            echo "$(tput sgr 0)"
+        fi
+        if [ -f "progmem.out" ]; then
+            echo ""
+            echo "$(tput setaf 6)Previous firmware build files already exist these will be cleaned up in 10 seconds.$(tput sgr 0)"
+            if [ $OUTPUT == "1" ] ; then
+                read -t 10 -p "Press Enter to continue..."
+            fi
+            echo "$(tput setaf 3)"
+            ./fw-clean.sh
+            echo "$(tput sgr 0)"
+        fi
+        # build languages
+        echo "$(tput setaf 3)"
+        ./lang-build.sh || exit 44
+        # build community languages
+        ./lang-community.sh || exit 45
+        # Combine compiled firmware with languages 
+        ./fw-build.sh || exit 46
+        cp not_tran.txt not_tran_$VARIANT.txt
+        cp not_used.txt not_used_$VARIANT.txt
+        echo "$(tput sgr 0)"
+        # Check if the motherboard is an EINSY and if so only one hex file will generated
+        MOTHERBOARD=$(grep --max-count=1 "\bMOTHERBOARD\b" $SCRIPT_PATH/Firmware/variants/$VARIANT.h | sed -e's/  */ /g' |cut -d ' ' -f3)
+        # If the motherboard is an EINSY just copy one hexfile
+        if [ "$MOTHERBOARD" = "BOARD_EINSY_1_0a" ]; then
+            echo "$(tput setaf 2)Copying multi language firmware for MK3/Einsy board to PF-build-hex folder$(tput sgr 0)"
+            # Make a copy of "lang.bin" for MK404 MK3 and MK3S
+            if [ ! -z "$mk404_flag" ]; then
+                cp -f lang.bin $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-lang.bin
+            fi
+            # End of "lang.bin" for MK3 and MK3S copy
+            cp -f firmware.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex
+        else
+            echo "$(tput setaf 2)Zip multi language firmware for MK2.5/miniRAMbo board to PF-build-hex folder$(tput sgr 0)"
+            cp -f firmware_cz.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-cz.hex
+            cp -f firmware_de.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-de.hex
+            cp -f firmware_es.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-es.hex
+            cp -f firmware_fr.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-fr.hex
+            cp -f firmware_it.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-it.hex
+            cp -f firmware_pl.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-pl.hex
+            cp -f firmware_nl.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-nl.hex
+            if [ $TARGET_OS == "windows" ]; then 
+                zip a $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
+                rm $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
+            elif [ $TARGET_OS == "linux" ]; then
+                # Make a copy for MK404 sim of MK2, MK2.5, MK2.5S firmware
+                if [ ! -z "$mk404_flag" ]; then
+                    cp -f firmware_de.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex
+                fi
+                # End of MK2, MK2.5, MK2.5S firmware copy
+            zip -m -j ../../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.zip ../../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-??.hex
+            fi
+        fi
+
+    # Cleanup after build
+    if [[ -z "$clean_flag" || "$clean_flag" == "0" ]]; then
+        echo "$(tput setaf 3)"
+        ./fw-clean.sh || exit 51
+        ./lang-clean.sh || exit 52
+        echo "$(tput sgr 0)"
+    fi
+
+    else
+        echo "$(tput setaf 2)Copying English only firmware to PF-build-hex folder$(tput sgr 0)"
+        cp -f $BUILD_PATH/Firmware.ino.hex $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex || exit 47
+    fi
+
+    # Cleanup Firmware
+    if [[ -z "$prusa_flag" || "$prusa_flag" == "0" ]]; then
+        rm $SCRIPT_PATH/Firmware/Configuration_prusa.h || exit 53
+    fi
+    # Delete dupblicates
+    if find $SCRIPT_PATH/lang/ -name '*RAMBo10a*.txt' -printf 1 -quit | grep -q 1
+    then
+        rm $SCRIPT_PATH/lang/*RAMBo10a*.txt
+    fi
+    # MK2 not supported in this branch
+    if find $SCRIPT_PATH/lang/ -name '*MK2-RAMBo13a*' -printf 1 -quit | grep -q 1
+    then
+        rm $SCRIPT_PATH/lang/*MK2-RAMBo13a*.txt
+    fi
+    if find $SCRIPT_PATH/lang/ -name 'not_tran.txt' -printf 1 -quit | grep -q 1
+    then
+        rm $SCRIPT_PATH/lang/not_tran.txt
+    fi
+    if find $SCRIPT_PATH/lang/ -name 'not_used.txt' -printf 1 -quit | grep -q 1
+    then
+        rm $SCRIPT_PATH/lang/not_used.txt
+    fi
+
+    #New fresh PF-Firmware-build
+    if [ "$new_build_flag" == "1" ]; then
+        rm -r -f $BUILD_PATH/* || exit 54
+    fi
+
+    # Restore files to previous state
+    sed -i -- "s/^#define FW_DEV_VERSION FW_VERSION_$DEV_STATUS/#define FW_DEV_VERSION FW_VERSION_UNKNOWN/g" $SCRIPT_PATH/Firmware/Configuration.h
+    sed -i -- 's/^#define FW_REPOSITORY "Prusa3d"/#define FW_REPOSITORY "Unknown"/g' $SCRIPT_PATH/Firmware/Configuration.h
+    if [ ! -z "$BUILD_ORG" ] ; then
+        sed -i -- "s/^#define FW_COMMIT_NR.*/#define FW_COMMIT_NR $BUILD_ORG/g" $SCRIPT_PATH/Firmware/Configuration.h
+    fi
+    echo $MULTI_LANGUAGE_CHECK
+    #sed -i -- "s/^#define LANG_MODE * /#define LANG_MODE              $MULTI_LANGUAGE_CHECK/g" $SCRIPT_PATH/Firmware/config.h
+    sed -i -- "s/^#define LANG_MODE *1/#define LANG_MODE              ${MULTI_LANGUAGE_CHECK}/g" $SCRIPT_PATH/Firmware/config.h
+    sed -i -- "s/^#define LANG_MODE *0/#define LANG_MODE              ${MULTI_LANGUAGE_CHECK}/g" $SCRIPT_PATH/Firmware/config.h
+    if [ $OUTPUT == "1" ] ; then
+        sleep 5
+    fi
+
+    # Restore build env files to previous state
+    sed -i -- "s/^#define FLASHEND .*$/#define FLASHEND        0x3FFFF/g" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h
+    sed -i -- "s/^prusa_einsy_rambo.upload.maximum_size.*/prusa_einsy_rambo.upload.maximum_size=253952/g" $BUILD_ENV_PATH/portable/packages/$BOARD_PACKAGE_NAME/hardware/avr/$BOARD_VERSION/boards.txt
+    sed -i -- "s/^#define RAMEND.*/#define RAMEND          0x21FF/g" $BUILD_ENV_PATH/hardware/tools/avr/avr/include/avr/iom2560.h
 
-	# Restore files to previous state
-	sed -i -- "s/^#define FW_DEV_VERSION FW_VERSION_$DEV_STATUS/#define FW_DEV_VERSION FW_VERSION_UNKNOWN/g" $SCRIPT_PATH/Firmware/Configuration.h
-	sed -i -- 's/^#define FW_REPOSITORY "Prusa3d"/#define FW_REPOSITORY "Unknown"/g' $SCRIPT_PATH/Firmware/Configuration.h
-	if [ ! -z "$BUILD_ORG" ] ; then
-		sed -i -- "s/^#define FW_COMMIT_NR.*/#define FW_COMMIT_NR $BUILD_ORG/g" $SCRIPT_PATH/Firmware/Configuration.h
-	fi
-	echo $MULTI_LANGUAGE_CHECK
-	#sed -i -- "s/^#define LANG_MODE * /#define LANG_MODE              $MULTI_LANGUAGE_CHECK/g" $SCRIPT_PATH/Firmware/config.h
-	sed -i -- "s/^#define LANG_MODE *1/#define LANG_MODE              ${MULTI_LANGUAGE_CHECK}/g" $SCRIPT_PATH/Firmware/config.h
-	sed -i -- "s/^#define LANG_MODE *0/#define LANG_MODE              ${MULTI_LANGUAGE_CHECK}/g" $SCRIPT_PATH/Firmware/config.h
-	if [ $OUTPUT == "1" ] ; then
-		sleep 5
-	fi
 done
 
 # Switch to hex path and list build files
 cd $SCRIPT_PATH
-cd ..
 echo "$(tput setaf 2) "
 echo " "
 echo "Build done, please use Slic3rPE > 1.41.0 to upload the firmware"
 echo "more information how to flash firmware https://www.prusa3d.com/drivers/ $(tput sgr 0)"
 #### End building
+
+
+#### MK404 Simulator
+
+# Check/compile MK404 sim
+if [ ! -z "$mk404_flag" ]; then
+    ./MK404-build.sh -c1 || exit 61
+
+# For Prusa MK2, MK2.5/S
+    if [ "$MOTHERBOARD" == "BOARD_RAMBO_MINI_1_3" ]; then
+        MK404_PRINTER="${MK404_PRINTER}_mR13"
+    else
+        if [[ "$mk404_flag" == "2" || "$mk404_flag" == "MMU2" || "$mk404_flag" == "MMU2S" ]]; then # Check if MMU2 is selected only for MK3/S
+            MK404_PRINTER="${MK404_PRINTER}MMU2"
+        fi
+    fi
+
+# Run MK404 with 'debugcore' and/or 'bootloader-file'
+echo "MK404_DEBUG --$MK404_DEBUG--"
+    if [ "$MK404_DEBUG" == "atmega404" ]; then
+        MK404_options="--debugcore"
+    elif [ "$MK404_DEBUG" == "atmega404_no_bootloader" ]; then
+        MK404_options='--debugcore --bootloader-file ""'
+    fi
+
+# Run MK404 with grafics
+    if [ ! -z "$graphics_flag" ]; then
+    echo "MK404_options --$MK404_options--"
+        if [ ! -z "$MK404_options" ]; then
+            MK404_options="${MK404_options} --colour-extrusion --extrusion Quad_HR -g "
+        else
+            MK404_options="--colour-extrusion --extrusion Quad_HR -g "
+        fi
+        if [[ "$graphics_flag" == "1" || "$graphics_flag" == "lite" ]]; then
+            MK404_options="${MK404_options}lite"
+        elif [[ "$graphics_flag" == "2" || "$graphics_flag" == "fancy" ]]; then
+            MK404_options="${MK404_options}fancy"
+        else
+        echo "$(tput setaf 1)Unsupported MK404 graphics option $graphics_flag$(tput sgr 0)"
+        fi
+    fi
+
+# Output some useful data
+    echo "Printer: $MK404_PRINTER"
+    echo "Options: $MK404_options"
+
+# Change to MK404 build folder
+    cd ../MK404/master/build
+
+# Copy language bin file for MK3 and MK3S to xflash
+#    if [ -f $SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-lang.bin ]; then
+#    echo "Copy 'FW$FW-Build$BUILD-$VARIANT-lang.bin' to 'Prusa_${MK404_PRINTER}_xflash.bin'"
+#        dd if=/dev/zero bs=1 count=262145 | tr "\000" "\377" >Prusa_${MK404_PRINTER}_xflash.bin
+#        dd if=$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-lang.bin of=Prusa_${MK404_PRINTER}_xflash.bin conv=notrunc
+#    fi
+
+#Decide which hex file to use EN_ONLY or Multi language
+if [ "$LANGUAGES" == "ALL" ]; then
+    MK404_firmware_file=$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT.hex
+else
+    MK404_firmware_file=$SCRIPT_PATH/../$OUTPUT_FOLDER/FW$FW-Build$BUILD-$VARIANT-EN_ONLY.hex
+fi
+
+# Start MK404
+# default with serial output and terminal to manipulate it via terminal
+    ./MK404 Prusa_$MK404_PRINTER -s --terminal $MK404_options -f $MK404_firmware_file || exit 62
+fi
+#### End of MK404 Simulator