diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 1b29c88fe..9da891d87 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -5974,28 +5974,30 @@ if(eSoundMode!=e_SOUND_MODE_SILENT)
     /*!
 	### M46 - Show the assigned IP address <a href="https://reprap.org/wiki/G-code#M46:_Show_the_assigned_IP_address">M46: Show the assigned IP address.</a>
     */
-    /*
-     case 46:
+    case 46:
     {
         // M46: Prusa3D: Show the assigned IP address.
-        uint8_t ip[4];
-        bool hasIP = card.ToshibaFlashAir_GetIP(ip);
-        if (hasIP) {
-            SERIAL_ECHOPGM("Toshiba FlashAir current IP: ");
-            SERIAL_ECHO(int(ip[0]));
-            SERIAL_ECHOPGM(".");
-            SERIAL_ECHO(int(ip[1]));
-            SERIAL_ECHOPGM(".");
-            SERIAL_ECHO(int(ip[2]));
-            SERIAL_ECHOPGM(".");
-            SERIAL_ECHO(int(ip[3]));
-            SERIAL_ECHOLNPGM("");
+        if (card.ToshibaFlashAir_isEnabled()) {
+            uint8_t ip[4];
+            bool hasIP = card.ToshibaFlashAir_GetIP(ip);
+            if (hasIP) {
+                // SERIAL_PROTOCOLPGM("Toshiba FlashAir current IP: ");
+                SERIAL_PROTOCOL(int(ip[0]));
+                SERIAL_PROTOCOLPGM(".");
+                SERIAL_PROTOCOL(int(ip[1]));
+                SERIAL_PROTOCOLPGM(".");
+                SERIAL_PROTOCOL(int(ip[2]));
+                SERIAL_PROTOCOLPGM(".");
+                SERIAL_PROTOCOL(int(ip[3]));
+                SERIAL_PROTOCOLPGM("\n");
+            } else {
+                SERIAL_PROTOCOLPGM("?Toshiba FlashAir GetIP failed\n");          
+            }
         } else {
-            SERIAL_ECHOLNPGM("Toshiba FlashAir GetIP failed");          
+            SERIAL_PROTOCOLPGM("n/a\n");          
         }
         break;
     }
-    */
 
     /*!
 	### M47 - Show end stops dialog on the display <a href="https://reprap.org/wiki/G-code#M47:_Show_end_stops_dialog_on_the_display">M47: Show end stops dialog on the display</a>
diff --git a/Firmware/Sd2Card.cpp b/Firmware/Sd2Card.cpp
index 449590f17..d1d350563 100644
--- a/Firmware/Sd2Card.cpp
+++ b/Firmware/Sd2Card.cpp
@@ -767,6 +767,9 @@ uint8_t Sd2Card::waitStartBlock(void) {
 
 // Toshiba FlashAir support, copied from 
 // https://flashair-developers.com/en/documents/tutorials/arduino/
+// However, the official website was closed in September 2019.
+// There is an archived website (written in Japanese).
+// https://flashair-developers.github.io/website/docs/tutorials/arduino/2.html
 
 //------------------------------------------------------------------------------
 /** Perform Extention Read. */
@@ -774,7 +777,7 @@ uint8_t Sd2Card::readExt(uint32_t arg, uint8_t* dst, uint16_t count) {
   uint16_t i;
 
   // send command and argument.
-  if (cardCommand(CMD48, arg)) {
+  if (cardCommand(CMD48, arg) && cardCommand(CMD17, arg)) { // CMD48 for W-03, CMD17 for W-04
     error(SD_CARD_ERROR_CMD48);
     goto fail;
   }
diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index 0ce3344ac..a12db7f48 100755
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -2120,12 +2120,14 @@ static void lcd_support_menu()
         // Menu was entered or SD card status has changed (plugged in or removed).
         // Initialize its status.
         _md->status = 1;
-        _md->is_flash_air = card.ToshibaFlashAir_isEnabled() && card.ToshibaFlashAir_GetIP(_md->ip);
-        if (_md->is_flash_air)
+        _md->is_flash_air = card.ToshibaFlashAir_isEnabled();
+        if (_md->is_flash_air) {
+            card.ToshibaFlashAir_GetIP(_md->ip); // ip[4] filled with 0 if it failed
+            // Prepare IP string from ip[4]
             sprintf_P(_md->ip_str, PSTR("%d.%d.%d.%d"), 
                 _md->ip[0], _md->ip[1], 
                 _md->ip[2], _md->ip[3]);
-        
+        }
     } else if (_md->is_flash_air && 
         _md->ip[0] == 0 && _md->ip[1] == 0 && 
         _md->ip[2] == 0 && _md->ip[3] == 0 &&
@@ -2191,7 +2193,11 @@ static void lcd_support_menu()
   if (_md->is_flash_air) {
       MENU_ITEM_BACK_P(STR_SEPARATOR);
       MENU_ITEM_BACK_P(PSTR("FlashAir IP Addr:"));  //c=18 r=1
-///!      MENU_ITEM(back_RAM, _md->ip_str, 0);
+      MENU_ITEM_BACK_P(PSTR(" "));
+      if (((menu_item - 1) == menu_line) && lcd_draw_update) {
+          lcd_set_cursor(2, menu_row);
+          lcd_printf_P(PSTR("%s"), _md->ip_str);
+      }
   }
 
   #ifndef MK1BP