diff --git a/Marlin/src/gcode/control/M993_M994.cpp b/Marlin/src/gcode/control/M993_M994.cpp
new file mode 100644
index 0000000000..4e13aa9d77
--- /dev/null
+++ b/Marlin/src/gcode/control/M993_M994.cpp
@@ -0,0 +1,92 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ALL(HAS_SPI_FLASH, SDSUPPORT, MARLIN_DEV_MODE)
+
+#include "../gcode.h"
+#include "../../sd/cardreader.h"
+#include "../../libs/W25Qxx.h"
+
+/**
+ * M993: Backup SPI Flash to SD
+ */
+void GcodeSuite::M993() {
+  if (!card.isMounted()) card.mount();
+
+  char fname[] = "spiflash.bin";
+  card.openFileWrite(fname);
+  if (!card.isFileOpen()) {
+    SERIAL_ECHOLNPAIR("Failed to open ", fname, " to write.");
+    return;
+  }
+
+  W25QXXFlash W25QXX;
+
+  uint8_t buf[1024];
+  uint32_t addr = 0;
+  W25QXX.init(SPI_QUARTER_SPEED);
+  SERIAL_ECHOPGM("Save SPI Flash");
+  while (addr < SPI_FLASH_SIZE) {
+    W25QXX.SPI_FLASH_BufferRead(buf, addr, COUNT(buf));
+    addr += COUNT(buf);
+    card.write(buf, COUNT(buf));
+    if (addr % (COUNT(buf) * 10) == 0) SERIAL_CHAR('.');
+  }
+  SERIAL_ECHOLNPGM(" done");
+
+  card.closefile();
+}
+
+/**
+ * M994: Load a backup from SD to SPI Flash
+ */
+void GcodeSuite::M994() {
+  if (!card.isMounted()) card.mount();
+
+  char fname[] = "spiflash.bin";
+  card.openFileRead(fname);
+  if (!card.isFileOpen()) {
+    SERIAL_ECHOLNPAIR("Failed to open ", fname, " to read.");
+    return;
+  }
+
+  W25QXXFlash W25QXX;
+
+  uint8_t buf[1024];
+  uint32_t addr = 0;
+  W25QXX.init(SPI_QUARTER_SPEED);
+  W25QXX.SPI_FLASH_BulkErase();
+  SERIAL_ECHOPGM("Load SPI Flash");
+  while(addr < SPI_FLASH_SIZE) {
+    card.read(buf, COUNT(buf));
+    W25QXX.SPI_FLASH_BufferWrite(buf, addr, COUNT(buf));
+    addr += COUNT(buf);
+    if (addr % (COUNT(buf) * 10) == 0) SERIAL_CHAR('.');
+  }
+  SERIAL_ECHOLNPGM(" done");
+
+  card.closefile();
+}
+
+#endif // HAS_SPI_FLASH && SDSUPPORT && MARLIN_DEV_MODE
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index f1692ee807..2309953f88 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -871,6 +871,11 @@ void GcodeSuite::process_parsed_command(const bool no_ok/*=false*/) {
         case 422: M422(); break;                                  // M422: Set Z Stepper automatic alignment position using probe
       #endif
 
+      #if BOTH(HAS_SPI_FLASH, SDSUPPORT)
+        case 993: M993(); break;                                  // M993: Backup SPI Flash to SD
+        case 994: M994(); break;                                  // M994: Load a Backup from SD to SPI Flash
+      #endif
+
       #if ENABLED(TOUCH_SCREEN_CALIBRATION)
         case 995: M995(); break;                                  // M995: Touch screen calibration for TFT display
       #endif
diff --git a/Marlin/src/gcode/gcode.h b/Marlin/src/gcode/gcode.h
index 7e89e809d0..783781b9c3 100644
--- a/Marlin/src/gcode/gcode.h
+++ b/Marlin/src/gcode/gcode.h
@@ -276,6 +276,8 @@
  * ************ Custom codes - This can change to suit future G-code regulations
  * G425 - Calibrate using a conductive object. (Requires CALIBRATION_GCODE)
  * M928 - Start SD logging: "M928 filename.gco". Stop with M29. (Requires SDSUPPORT)
+ * M993 - Backup SPI Flash to SD
+ * M994 - Load a Backup from SD to SPI Flash
  * M995 - Touch screen calibration for TFT display
  * M997 - Perform in-application firmware update
  * M999 - Restart after being stopped by error
@@ -846,6 +848,11 @@ private:
 
   TERN_(TOUCH_SCREEN_CALIBRATION, static void M995());
 
+  #if BOTH(HAS_SPI_FLASH, SDSUPPORT)
+    static void M993();
+    static void M994();
+  #endif
+
   TERN_(PLATFORM_M997_SUPPORT, static void M997());
 
   static void M999();
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.cpp b/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.cpp
index 9d3adc1bab..979c916e5c 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.cpp
+++ b/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.cpp
@@ -27,6 +27,8 @@
 #include "../../../../inc/MarlinConfig.h"
 #include "SPIFlashStorage.h"
 
+extern W25QXXFlash W25QXX;
+
 uint8_t SPIFlashStorage::m_pageData[SPI_FLASH_PageSize];
 uint32_t SPIFlashStorage::m_currentPage;
 uint16_t SPIFlashStorage::m_pageDataUsed;
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.h b/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.h
index 5a12413709..98c8067bd3 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.h
+++ b/Marlin/src/lcd/extui/lib/mks_ui/SPIFlashStorage.h
@@ -21,7 +21,7 @@
  */
 #pragma once
 
-#include "W25Qxx.h"
+#include "../../../../libs/W25Qxx.h"
 
 #define HAS_SPI_FLASH_COMPRESSION 1
 
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/draw_ui.cpp b/Marlin/src/lcd/extui/lib/mks_ui/draw_ui.cpp
index e8899b9ad1..5d87eb9f87 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/draw_ui.cpp
+++ b/Marlin/src/lcd/extui/lib/mks_ui/draw_ui.cpp
@@ -27,7 +27,6 @@
   #include "SPI_TFT.h"
 #endif
 
-#include "W25Qxx.h"
 #include "tft_lvgl_configuration.h"
 
 #include "pic_manager.h"
@@ -50,6 +49,7 @@
   #include "../../../../feature/pause.h"
 #endif
 
+W25QXXFlash W25QXX;
 CFG_ITMES gCfgItems;
 UI_CFG uiCfg;
 DISP_STATE_STACK disp_state_stack;
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/mks_hardware_test.cpp b/Marlin/src/lcd/extui/lib/mks_ui/mks_hardware_test.cpp
index 00371d7ab5..a35ae29701 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/mks_hardware_test.cpp
+++ b/Marlin/src/lcd/extui/lib/mks_ui/mks_hardware_test.cpp
@@ -29,7 +29,6 @@
 
 #include "tft_lvgl_configuration.h"
 #include "draw_ready_print.h"
-#include "W25Qxx.h"
 #include "mks_hardware_test.h"
 #include "draw_ui.h"
 #include "pic_manager.h"
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.cpp b/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.cpp
index 072213e499..447303a887 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.cpp
+++ b/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.cpp
@@ -29,10 +29,10 @@
 #include "mks_hardware_test.h"
 
 #include "SPIFlashStorage.h"
-#include "W25Qxx.h"
+#include "../../../../libs/W25Qxx.h"
 
-#include "../../../../MarlinCore.h"
 #include "../../../../sd/cardreader.h"
+#include "../../../../MarlinCore.h"
 
 extern uint16_t DeviceCode;
 extern unsigned char bmp_public_buf[17 * 1024];
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.h b/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.h
index 354e11a540..4d9d08a9b4 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.h
+++ b/Marlin/src/lcd/extui/lib/mks_ui/pic_manager.h
@@ -23,6 +23,8 @@
 
 #include "../../../../inc/MarlinConfig.h"
 
+#include "../../../../libs/W25Qxx.h"
+
 #include <lvgl.h>
 
 #include <stdint.h>
@@ -154,6 +156,8 @@ extern void spi_flash_read_test();
 extern void default_view_Read(uint8_t *default_view_Rbuff, uint32_t default_view_Readsize);
 extern void flash_view_Read(uint8_t *flash_view_Rbuff, uint32_t flash_view_Readsize);
 
+extern W25QXXFlash W25QXX;
+
 #ifdef __cplusplus
 } /* C-declarations for C++ */
 #endif
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/tft_lvgl_configuration.cpp b/Marlin/src/lcd/extui/lib/mks_ui/tft_lvgl_configuration.cpp
index fc5b8c1bf2..81b50a1018 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/tft_lvgl_configuration.cpp
+++ b/Marlin/src/lcd/extui/lib/mks_ui/tft_lvgl_configuration.cpp
@@ -35,7 +35,6 @@
 
 #include "tft_lvgl_configuration.h"
 #include "draw_ready_print.h"
-#include "W25Qxx.h"
 #include "pic_manager.h"
 #include "mks_hardware_test.h"
 #include "draw_ui.h"
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/W25Qxx.cpp b/Marlin/src/libs/W25Qxx.cpp
similarity index 90%
rename from Marlin/src/lcd/extui/lib/mks_ui/W25Qxx.cpp
rename to Marlin/src/libs/W25Qxx.cpp
index 60b4d0b7ea..d51dfb819d 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/W25Qxx.cpp
+++ b/Marlin/src/libs/W25Qxx.cpp
@@ -19,13 +19,12 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
-#include "../../../../inc/MarlinConfigPre.h"
 
-#if 1 // ENABLED(SPI_FLASH)
-#if HAS_TFT_LVGL_UI
+#include "../inc/MarlinConfig.h"
+
+#if HAS_SPI_FLASH
 
 #include <SPI.h>
-#include "../../../../inc/MarlinConfig.h"
 
 #include "W25Qxx.h"
 
@@ -45,9 +44,7 @@
 #define W25QXX_CS_H OUT_WRITE(SPI_FLASH_CS_PIN, HIGH)
 #define W25QXX_CS_L OUT_WRITE(SPI_FLASH_CS_PIN, LOW)
 
-ext_FLASH W25QXX;
-
-void ext_FLASH::init(uint8_t spiRate) {
+void W25QXXFlash::init(uint8_t spiRate) {
 
   OUT_WRITE(SPI_FLASH_CS_PIN, HIGH);
 
@@ -85,12 +82,12 @@ void ext_FLASH::init(uint8_t spiRate) {
  *
  * @details
  */
-uint8_t ext_FLASH::spi_flash_Rec() {
+uint8_t W25QXXFlash::spi_flash_Rec() {
   uint8_t returnByte = SPI.transfer(ff);
   return returnByte;
 }
 
-uint8_t ext_FLASH::spi_flash_read_write_byte(uint8_t data) {
+uint8_t W25QXXFlash::spi_flash_read_write_byte(uint8_t data) {
   uint8_t returnByte = SPI.transfer(data);
   return returnByte;
 }
@@ -104,7 +101,7 @@ uint8_t ext_FLASH::spi_flash_read_write_byte(uint8_t data) {
  *
  * @details Uses DMA
  */
-void ext_FLASH::spi_flash_Read(uint8_t* buf, uint16_t nbyte) { SPI.dmaTransfer(0, const_cast<uint8_t*>(buf), nbyte); }
+void W25QXXFlash::spi_flash_Read(uint8_t* buf, uint16_t nbyte) { SPI.dmaTransfer(0, const_cast<uint8_t*>(buf), nbyte); }
 
 /**
  * @brief  Send a single byte on SPI port
@@ -113,7 +110,7 @@ void ext_FLASH::spi_flash_Read(uint8_t* buf, uint16_t nbyte) { SPI.dmaTransfer(0
  *
  * @details
  */
-void ext_FLASH::spi_flash_Send(uint8_t b) { SPI.send(b); }
+void W25QXXFlash::spi_flash_Send(uint8_t b) { SPI.send(b); }
 
 /**
  * @brief  Write token and then write from 512 byte buffer to SPI (for SD card)
@@ -123,12 +120,12 @@ void ext_FLASH::spi_flash_Send(uint8_t b) { SPI.send(b); }
  *
  * @details Use DMA
  */
-void ext_FLASH::spi_flash_SendBlock(uint8_t token, const uint8_t* buf) {
+void W25QXXFlash::spi_flash_SendBlock(uint8_t token, const uint8_t* buf) {
   SPI.send(token);
   SPI.dmaSend(const_cast<uint8_t*>(buf), 512);
 }
 
-uint16_t ext_FLASH::W25QXX_ReadID(void) {
+uint16_t W25QXXFlash::W25QXX_ReadID(void) {
   uint16_t Temp = 0;
   W25QXX_CS_L;
   spi_flash_Send(0x90);
@@ -141,7 +138,7 @@ uint16_t ext_FLASH::W25QXX_ReadID(void) {
   return Temp;
 }
 
-void ext_FLASH::SPI_FLASH_WriteEnable(void) {
+void W25QXXFlash::SPI_FLASH_WriteEnable(void) {
   /* Select the FLASH: Chip Select low */
   W25QXX_CS_L;
   /* Send "Write Enable" instruction */
@@ -159,7 +156,7 @@ void ext_FLASH::SPI_FLASH_WriteEnable(void) {
 * Output         : None
 * Return         : None
 *******************************************************************************/
-void ext_FLASH::SPI_FLASH_WaitForWriteEnd(void) {
+void W25QXXFlash::SPI_FLASH_WaitForWriteEnd(void) {
   uint8_t FLASH_Status = 0;
 
   /* Select the FLASH: Chip Select low */
@@ -178,7 +175,7 @@ void ext_FLASH::SPI_FLASH_WaitForWriteEnd(void) {
   W25QXX_CS_H;
 }
 
-void ext_FLASH::SPI_FLASH_SectorErase(uint32_t SectorAddr) {
+void W25QXXFlash::SPI_FLASH_SectorErase(uint32_t SectorAddr) {
   /* Send write enable instruction */
   SPI_FLASH_WriteEnable();
 
@@ -200,7 +197,7 @@ void ext_FLASH::SPI_FLASH_SectorErase(uint32_t SectorAddr) {
   SPI_FLASH_WaitForWriteEnd();
 }
 
-void ext_FLASH::SPI_FLASH_BlockErase(uint32_t BlockAddr) {
+void W25QXXFlash::SPI_FLASH_BlockErase(uint32_t BlockAddr) {
   SPI_FLASH_WriteEnable();
   W25QXX_CS_L;
   /* Send Sector Erase instruction */
@@ -224,7 +221,7 @@ void ext_FLASH::SPI_FLASH_BlockErase(uint32_t BlockAddr) {
 * Output         : None
 * Return         : None
 *******************************************************************************/
-void ext_FLASH::SPI_FLASH_BulkErase(void) {
+void W25QXXFlash::SPI_FLASH_BulkErase(void) {
   /* Send write enable instruction */
   SPI_FLASH_WriteEnable();
 
@@ -253,7 +250,7 @@ void ext_FLASH::SPI_FLASH_BulkErase(void) {
 * Output         : None
 * Return         : None
 *******************************************************************************/
-void ext_FLASH::SPI_FLASH_PageWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) {
+void W25QXXFlash::SPI_FLASH_PageWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) {
   /* Enable the write access to the FLASH */
   SPI_FLASH_WriteEnable();
 
@@ -296,7 +293,7 @@ void ext_FLASH::SPI_FLASH_PageWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16
 * Output         : None
 * Return         : None
 *******************************************************************************/
-void ext_FLASH::SPI_FLASH_BufferWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) {
+void W25QXXFlash::SPI_FLASH_BufferWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) {
   uint8_t NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0, temp = 0;
 
   Addr = WriteAddr % SPI_FLASH_PageSize;
@@ -361,7 +358,7 @@ void ext_FLASH::SPI_FLASH_BufferWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint
 * Output         : None
 * Return         : None
 *******************************************************************************/
-void ext_FLASH::SPI_FLASH_BufferRead(uint8_t* pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead) {
+void W25QXXFlash::SPI_FLASH_BufferRead(uint8_t* pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead) {
   /* Select the FLASH: Chip Select low */
   W25QXX_CS_L;
 
@@ -389,7 +386,4 @@ void ext_FLASH::SPI_FLASH_BufferRead(uint8_t* pBuffer, uint32_t ReadAddr, uint16
   W25QXX_CS_H;
 }
 
-void ext_FLASH::lv_pic_read(uint8_t *P_Rbuff, uint32_t addr, uint32_t size) {SPI_FLASH_BufferRead((uint8_t *)P_Rbuff, addr, size);}
-
-#endif // HAS_TFT_LVGL_UI
-#endif // 1 ... SPI_FLASH
+#endif // HAS_SPI_FLASH
diff --git a/Marlin/src/lcd/extui/lib/mks_ui/W25Qxx.h b/Marlin/src/libs/W25Qxx.h
similarity index 67%
rename from Marlin/src/lcd/extui/lib/mks_ui/W25Qxx.h
rename to Marlin/src/libs/W25Qxx.h
index 88d5d6c2f5..81e9643450 100644
--- a/Marlin/src/lcd/extui/lib/mks_ui/W25Qxx.h
+++ b/Marlin/src/libs/W25Qxx.h
@@ -52,49 +52,7 @@
 #define SPI_FLASH_PageSize           256
 #define SPI_FLASH_PerWritePageSize   256
 
-#if 0
-
-  #define PIC_NAME_MAX_LEN        50
-
-  #define LOGO_MAX_SIZE           (300*1024)
-  #define TITLELOGO_MAX_SIZE      (150*1024)
-  #define DEFAULT_VIEW_MAX_SIZE   (200*200*2)
-  #define FLASH_VIEW_MAX_SIZE     (200*200*2)
-
-  //Robin 2
-  #define PIC_NAME_ADDR           0x003000
-  #define PIC_SIZE_ADDR           0x007000
-  #define PIC_COUNTER_ADDR        0x008000
-  #define PIC_LOGO_ADDR           0x009000
-  //#define PIC_DATA_ADDR         0x02f000
-
-  #define DEFAULT_VIEW_ADDR       0XC5800
-  #define BAK_VIEW_ADDR           (DEFAULT_VIEW_ADDR+90*1024)
-  #define PIC_ICON_LOGO_ADDR      (BAK_VIEW_ADDR+80*1024)
-
-  #define PIC_DATA_ADDR           (PIC_ICON_LOGO_ADDR+350*1024)
-
-  #define FONTINFOADDR            0x600000
-  #define UNIGBK_FLASH_ADDR       (FONTINFOADDR+4096) // 4*1024
-  #define GBK_FLASH_ADDR          (UNIGBK_FLASH_ADDR+180224) // 176*1024
-
-  #define PER_PIC_MAX_SPACE       (32*1024)
-
-  union union32 {
-    uint8_t bytes[4];
-    uint32_t dwords;
-  };
-
-  struct pic_msg {
-    uint8_t name[PIC_NAME_MAX_LEN];
-    union union32 size;
-  };
-
-  typedef struct pic_msg PIC_MSG;
-
-#endif // if 0
-
-class ext_FLASH {
+class W25QXXFlash {
 public:
   void init(uint8_t spiRate);
   static uint8_t spi_flash_Rec();
@@ -111,14 +69,8 @@ public:
   static void SPI_FLASH_PageWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite);
   static void SPI_FLASH_BufferWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite);
   static void SPI_FLASH_BufferRead(uint8_t* pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead);
-  //uint32_t lv_get_pic_addr(uint8_t *Pname);
-  void lv_pic_read(uint8_t *P_Rbuff, uint32_t addr, uint32_t size);
 };
 
-extern ext_FLASH W25QXX;
-
-//extern uint32_t lv_get_pic_addr(uint8_t *Pname);
-
 //#ifdef __cplusplus
 //} /* C-declarations for C++ */
 //#endif
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h
index afa9354aa2..1604064352 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO.h
@@ -240,8 +240,9 @@
   #define ILI9488_ORIENTATION               ILI9488_MADCTL_MX | ILI9488_MADCTL_MV
 #endif
 
-#define SPI_FLASH
-#if ENABLED(SPI_FLASH)
+#define HAS_SPI_FLASH                       1
+#define SPI_FLASH_SIZE                      0x1000000 // 16MB
+#if HAS_SPI_FLASH
   #define W25QXX_CS_PIN                     PB12
   #define W25QXX_MOSI_PIN                   PB15
   #define W25QXX_MISO_PIN                   PB14
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
index 4552f8cd9f..be363e4537 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
@@ -398,8 +398,9 @@
 
 #endif // HAS_SPI_LCD
 
-#define SPI_FLASH
-#if ENABLED(SPI_FLASH)
+#define HAS_SPI_FLASH                       1
+#define SPI_FLASH_SIZE                      0x1000000 // 16MB
+#if HAS_SPI_FLASH
   #define W25QXX_CS_PIN                     PB12
   #define W25QXX_MOSI_PIN                   PB15
   #define W25QXX_MISO_PIN                   PB14