BL firmware

tip

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

Enter programming mode

• There are two ways to enter programming mode
• First method: With the mainboard completely powered off, long press BOOT and connect one end of a data transmission cable to the mainboard and the other end to your device, suitable for WINDOWS
• Second method: After connecting one end of a data transmission cable to the mainboard and the other end to your device, long press BOOT and input the command, suitable for host computer
  

Flashing firmware

Windows flashing tutorial

• C8 bootloader firmware Click to automatically download firmware

• Set dip switches 3, 4 to the right, connect the lower machine and the upper machine through the built-in USB

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

  

Notice

• System compatibility issues, please use the computer's USB2.0 for burning
• If it still cannot be burned, please use the host machine for burning

1. Burning tool Download link
2. Need to download SetupSTM32CubeProgrammer and STM32 DFU driver
3. Copy the firmware (klipper.bin) compiled in front or the precompiled Katapult firmware to any directory on the computer
4. Use a Type-C data cable to connect the motherboard to the computer, make sure it is already:Enter DFU burning mode
5. In STM32CubeProgrammer, select USB mode, refresh, and connect
   
6. If no error pop-up appears, then the connection is successful.
   Warning

   If the content shown below appears, it indicates a problem with the computer or software, please use the host machine for burning:Host machine burning tutorial

   
7. Click the download icon on the left and select several options below
   
8. Click the Browse button indicated by the arrow, then select the firmware you need to burn
   
9. Select Start address and enter 0x08000000
   
10. Click Start automatic mode below to start burning the firmware
    
11. The prompt below indicates that the firmware burning is complete
    

Host computer flashing tutorial

• Set dip switches 1, 2 to the right, connect the lower machine and the upper machine through the built-in USB

• Set dip switches 3, 4 to the left, otherwise it will affect the connection between the lower machine and the upper machine

  

• After setting the dip switches in this way, the USB port below will be occupied by the lower machine, please do not connect other devices

  

• Please ensure that the host computer can access the internet

  sudo wget https://cdn.mellow.klipper.cn/BL/HIDBL.bin -O ~/HIDBL.bin && sudo fly-flash -d c8 -u -f ~/HIDBL.bin

• When the following prompt appears, long press the BOOT key on the lower machine and then press Enter

  

• When the following image appears, it means the flashing is successful and you can release the BOOT key