BL Firmware

tip

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

Enter Flash Mode

• There are two methods to enter flash mode
• First: With the motherboard completely powered off, hold down BOOT and then connect one end of a data cable to the motherboard and the other end to your device, suitable for Windows
• Second: After connecting one end of a data cable to the motherboard and the other end to your device, hold down BOOT and then send the command, suitable for host computers
  

Flash Firmware

Windows Flash Tutorial

• C8's bootloader firmware

  • Click on the download link below
  • Loading...

• Move DIP switches 3 and 4 to the right, connect the slave device to the host via the built-in USB

• Move DIP switches 1 and 2 to the left, otherwise it will affect the connection between the slave and the host

  

Notice

To ensure successful STM32 firmware flashing, please pay attention to the following:

• Some computers' USB ports may cause unstable flashing due to driver or signal compatibility issues. We recommend that you try connecting using a different USB port.
• If changing ports doesn't help, an effective solution is to connect via an external USB hub, which often improves compatibility.
• When the flashing software displays the error message below, try using a hub first. If the problem persists, please check or use the host computer to flash
  

1. Flashing tool Download link
2. Download SetupSTM32CubeProgrammer and STM32 DFU driver
3. Download the firmware to any directory on your computer
4. Connect the motherboard to the computer using a Type-C cable, ensuring it has entered dfu flashing mode
5. In STM32CubeProgrammer, select USB mode, then refresh and connect
   
6. If no error pop-up appears, the connection is successful.
   Warning

   If the following message appears, it indicates a computer or software issue. Please use the host computer to flash: Host Computer Flashing Guide

   
7. Click the download icon on the left and select the options below
   
8. Click Browse at the arrow's location, then select the firmware you need to flash
   
9. Select Start address and enter 0x08000000
   • Note: If the firmware is in HEX format, skip this step!!
   
10. Click Start automatic mode below to begin flashing the firmware
    
11. The appearance of the message below indicates that the firmware has been successfully flashed
    

Host Flash Tutorial

• Move DIP switches 1 and 2 to the right, connect the slave device to the host via the built-in USB

• Move DIP switches 3 and 4 to the left, otherwise it will affect the connection between the slave and the host

  

• After adjusting the DIP switches as described above, the USB port below will be occupied by the slave device; do not connect any other devices

  

• Please ensure that the host computer has internet access

• For FlyOS-Armbian system, please use the following command first

  sudo wget https://cnb.cool/3dmellow/public/static-files/-/git/raw/main/firmware/HIDBL.bin -O ~/HIDBL.bin && sudo fly-flash -d c8 -u -f ~/HIDBL.bin

• For FlyOS-FAST system, please use the following command first

  sudo wget https://cnb.cool/3dmellow/public/static-files/-/git/raw/main/firmware/HIDBL.bin -O /data/HIDBL.bin && fast-flash -d c8 -u -f /data/HIDBL.bin

• When the following prompt appears, hold down the BOOT button on the slave device and press Enter

  

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