Skip to main content

BL Firmware

Tip
  • Please note that the factory has pre-flashed the bootloader, no need to flash it again.

Enter Flash Mode​

  • There are two ways to enter flash mode.
  • Method 1: With the mainboard completely powered off, short BOOT and BOOT1, then connect the data cable (with data transfer capability) to the mainboard and your device.
  • Method 2: After connecting the data cable (with data transfer capability) to the mainboard and your device, short BOOT and BOOT1, then press the RST button, release the RST button, and finally disconnect the shorted BOOT jumper.
    Loading...

Flash Firmware​

  • Gemini bootloader firmware
  • You can obtain the firmware via the link below:
Please note

The zip archive must be extracted before use.

  • Alternatively, download the complete repository via git (ensure the host machine has internet access):

  • For general systems

    cd && git clone https://cnb.cool/3dmellow/FLY-Firmware.git

  • For FLY host machine

    git clone https://cnb.cool/3dmellow/FLY-Firmware.git /data/FLY-Firmware
    ln -s /data/FLY-Firmware /root/FLY-Firmware

  • If the firmware package has already been downloaded, it is recommended to update to the latest version before proceeding:

    cd ~/FLY-Firmware && git pull
  • The previous repository is no longer maintained. To delete it, execute: 
    rm -rf ~/FLY_Katapult /root/FLY_Katapult
  • Firmware location:
FLY-Firmware/MainBoard/Gemini
  • Toggle switches 3 and 4 to the right to connect the lower computer to the upper computer via the built-in USB.
  • Toggle switches 1 and 2 to the left; otherwise, it will affect the connection between the lower computer and the upper computer.
    Loading...
Notice

To ensure successful STM32 flashing, please note the following:

  • The USB port on some computers may cause unstable flashing due to driver or signal compatibility issues. It is recommended to try a different USB port for connection.
  • If changing ports does not work, an effective solution is to connect via an external USB hub, which often improves compatibility.
  • When the flashing software reports the error shown below, please also prioritize trying a USB hub. If the issue persists, check or use the host computer for flashing.
    Loading...
  1. Flashing tool Download Link
  2. You need to 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, refresh, and connect
    Loading...
  6. If no error popup appears, the connection is successful.
    Loading...
  7. Click the download icon on the left and check the following options
    Loading...
  8. Click Browse as indicated by the arrow, then select the firmware you need to flash
    Loading...
  9. Set Start address to 0x08000000
    • Note: If the firmware is in HEX format, please skip this step!!
    Loading...
  10. Click Start automatic mode below to begin flashing the firmware
    Loading...
  11. The following prompt indicates that the firmware flashing is complete
    Loading...
Loading...