Update V400 Motherboard Firmware (MKS Robin Nano V2.0 STM32F103)

It's important that your motherboard firmware version matches with the installed Klipper version.

Version is visible on System Loads tile -> mcu section (in Machine tab).

To update firmware, follow these instructions:

• In the SSH command prompt window, enter the following commands (one at a time):

  cd ~/klipper/
  

  make menuconfig
  

• Move on the menu with the Up and Down keys of your keyboard and validate the selected item with the Enter key and select these settings:

• Then on your keyboard press the Q key then Y to save configuration.

• Enter the following commands to compile firmware (one at a time):

  make clean
  

  make
  

• Then this one to convert firmware:

  ./scripts/update_mks_robin.py out/klipper.bin out/Robin_nano35.bin
  

• V400 motherboard doesn't support DFU mode, so it's not possible to install the firmware directly. It's therefore necessary to install it manually.

• Get the firmware named Robin_nano35.bin in /home/pi/klipper/out/ directory (on the left part of MobaXterm).

• Copy it to the root of an microSD card formatted in FAT32 and an allocation size of 4096. Use a small size like 128MB or 256MB for microSD because some motherboards do not support microSD with large capacity for flash.

• Insert the microSD card into the motherboard then turn on the printer.

• Installation only takes a few seconds, to verify that the firmware has been successfully installed, the file on the microSD card must have been renamed to ROBIN_NANO35.BIN.CUR.