update mcu klipper on prusa mini
https://docs.mainsail.xyz/setup/
putty into your Raspberry Pi:
cd ~/klipper/
make menuconfig
Enable extra low-level configuration options
STMicroelectronics STM32
STM32F407
Bootloader offset to 128KiB + 512 byte offset
Clock Reference to 12 MHz crystal
Communication interface to USB (on PA11/PA12)
close and save
make
switch off mini (only)
put on pin over 2 prongs on pcb buddy board
switch on mini
sudo service klipper stop
make flash FLASH_DEVICE=0483:df11
sudo service klipper start
switch off mini (only)
take off pin over 2 prongs on pcb buddy board
switch on mini
restart firmware in mainsail