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BL firmware

tip
  • Please note that the bootloader has already been pre-flashed, no need to flash again

Enter programming mode

  • There are two ways to enter programming mode
  • First method: With the main board completely powered off, short-circuit BOOT and BOOT1, then connect one end of a data transfer cable to the main board and the other end to your device
  • Second method: After connecting one end of a data transfer cable to the main board and the other end to your device, short-circuit BOOT and BOOT1, then press the RST key, release the RST key, and finally disconnect the BOOT jumper

Flashing firmware

  • Gemini bootloader firmware

    • Click the download link below
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  • Set dip switches 3, 4 to the right, connect the lower machine and upper machine via built-in USB

  • Set dip switches 1, 2 to the left, otherwise it will affect the connection between the lower machine and upper machine

Notes
  • USB3.0 may fail to burn, please try to use the USB2.0 of the computer for burning
  • If it still cannot be burned, please use the host software for burning
  • If the error below appears, please use a USB extension dock
  1. Burning tool Download address
  2. Need to download SetupSTM32CubeProgrammer and STM32 DFU driver
  3. Copy the compiled firmware klipper.bin, Katapult or Marlin to any directory on the computer
  4. Use a Type-C data cable to connect the mainboard to the computer, and make sure it is in dfu burn mode
  5. In STM32CubeProgrammer, select USB mode, refresh and connect
  6. If no error pop-up appears, the connection is successful.
    Warning

    If the content shown in the figure appears, it is a computer or software issue. Please use the host software for burning:Host software burning tutorial

  7. Click the left download icon and select the ones below
  8. Click the Browse indicated by the arrow, and then select the firmware you need to burn
  9. Select Start address and input 0x08000000
    • Please note that if the firmware is in HEX format, skip this step!
  10. Click Start automatic mode at the bottom to start burning the firmware
  11. If the prompt below appears, it means the firmware has been burned successfully
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