K1 Motherboard With 32Bit TMC2209 For LCD/mSLA 3D Printer Controller Board
Super quiet by TMC2209 drivers , Bootloader installed,copy the firmware file to a formated SD card with no other files in it. Turn off the printer and unplug the power cord. Insert the SD card & power cord, and turn on the printer. Wait 10s to complete the firmware updating process., easier to flash the firmware.