BL Firmware

tip

• Please note that the bootloader is pre-flashed from the factory and does not need to be re-flashed.

Entering Flash Mode

• There are two methods to enter flash mode.
• First: With the motherboard completely powered off, short the BOOT and BOOT1 pins, then connect a data cable capable of data transfer between the motherboard and your device.
• Second: After connecting a data cable capable of data transfer between the motherboard and your device, short the BOOT and BOOT1 pins, then press the RST key. Release the RST key, and finally disconnect the short on the BOOT jumper.
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Flashing Firmware

• Windows Flashing Tutorial
• Upper Computer Flashing Tutorial

• Bootloader firmware for Gemini

  • Click the download link below.
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• Set DIP switches 3 and 4 to the right to connect the lower computer to the upper computer via the built-in USB.

• Set DIP switches 1 and 2 to the left; otherwise, it will affect the connection between the lower and upper computers.

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Important Notice

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

• Some computer USB ports may have driver or signal compatibility issues, leading to unstable flashing. It is recommended that you try connecting to a different USB port.
• 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 message shown below, also try using a hub first. If the problem persists, please check or use the host computer software for flashing.
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1. Flashing Tool Download Link
2. Download SetupSTM32CubeProgrammer and the STM32 DFU Driver.
3. Download the firmware to any directory on your computer.
4. Connect the mainboard to the computer using a Type-C cable. Ensure it has entered DFU flashing mode.
5. In STM32CubeProgrammer, select USB mode, refresh, and connect.
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6. If no error pop-up appears, the connection is successful.
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7. Click the download icon on the left and select the options shown below.
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8. Click the Browse button indicated by the arrow, then select the firmware you need to flash.
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9. For Start address, enter 0x08000000.
   • Note: If the firmware is in HEX format, please skip this step!!
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10. Click Start automatic mode below to begin flashing the firmware.
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11. The prompt below indicates that the firmware flashing is complete.
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• Set DIP switches 1 and 2 to the right to connect the lower computer to the upper computer via the built-in USB.
• Set DIP switches 3 and 4 to the left; otherwise, it will affect the connection between the lower and upper computers.
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• After setting the DIP switches this way, the USB port below will be occupied by the lower computer. Please do not connect other devices to it.
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1. Install the Flashing Tool

• FLY host machines do not need to perform this step.
• If installation is required, ensure the host machine is connected to the internet.
• If the flashing tool is already installed, you can skip this step.

sudo apt update
sudo apt install dfu-util -y

2. Check Device Connection Status

• Execute the following command to confirm if the device is successfully connected:

lsusb

• If the DFU device is not recognized, try re-entering flashing mode.
• On some system versions, the device name may differ. As long as 0483:df11 appears, it indicates successful entry into flashing mode.

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3. Obtain Precompiled Firmware

• The following are precompiled firmware files. Please select the corresponding command to download based on your system type (ensure the host machine can access the internet). If unable to download due to network issues, contact the after-sales group administrator for assistance.

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• General System
• FlyOS-FAST System

cd && git clone https://github.com/FengHua741/FLY_Katapult.git

git clone https://github.com/FengHua741/FLY_Katapult.git /data/FLY_Katapult 
ln -s /data/FLY_Katapult /root/FLY_Katapult

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

cd ~/FLY_Katapult && git pull

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4. Flash the firmware

tip

Only one of the firmwares needs to be flashed.

• Below is the bootloader firmware flashing command.

  sudo dfu-util -a 0 -d 0483:df11 --dfuse-address 0x08000000 -D ~/FLY_Katapult/BL/Gemini/GeminiV3.bin

5. If the content shown by the arrow in the image below, File downloaded successfully, appears, the flashing is successful.

warning

Please ignore the error messages after the line pointed to by the red arrow!!!

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tip

After flashing is complete, the motherboard needs to be completely powered off once.