BL firmware

tip

• Please note that the bootloader has already been pre-flashed at the factory and does not need to be flashed again.

Entering programming mode

• There are two methods to enter programming mode.
• The first method: Under the condition of completely disconnecting the motherboard power, long press BOOT and then connect the data transfer cable one end to the motherboard and the other end to your device, suitable for WINDOWS
• The second method: After connecting the data transfer cable one end to the motherboard and the other end to your device, long press BOOT and then input the command, suitable for the host machine
  

Flashing firmware

Windows flashing tutorial

• The bootloader firmware for C8 Click to automatically download the firmware

• Switches 3, 4 should be moved to the right to connect the lower-level machine with the upper-level machine via built-in USB

• Switches 1, 2 should be moved to the left, otherwise it will affect the connection between the lower-level machine and the upper-level 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 machine flashing tutorial

• Switches 1, 2 should be moved to the right to connect the lower-level machine with the upper-level machine via built-in USB

• Switches 3, 4 should be moved to the left, otherwise it will affect the connection between the lower-level machine and the upper-level machine

  

• After moving the switches as instructed, the bottom USB port will be occupied by the lower-level machine, so do not plug in any other devices

  

• Ensure that the host machine can access the internet normally

  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, hold down the lower-level machine's BOOT key and press Enter

  

• When the image below appears, it indicates that the firmware has been successfully flashed and you can release the BOOT key