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BL Firmware

Tip
  • Note that the bootloader is pre-flashed at the factory, no need to flash again.

Entering Flash Mode​

Tip

The right side is the BOOT button, and the left side is the RESET button.

  • There are two methods to enter flash mode
  • Method 1: With the tool board completely powered off, hold down the BOOT button, then connect one end of the TYPE-C cable (with data transfer capability) to the motherboard and the other end to your device.
  • Method 2: With the TYPE-C cable (with data transfer capability) connected to the motherboard and your device, hold down the BOOT button, then press and release the RST button, and finally release the BOOT button.
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Flashing Firmware​

  • E3-PRO-Ultra Katapult Firmware
  • You can obtain the firmware via the following links:
  • The firmware is located at
FLY-Firmware/MainBoard/E3
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.
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  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
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  6. If no error popup appears, the connection is successful.
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  7. Click the download icon on the left and check the following options
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  8. Click Browse as indicated by the arrow, then select the firmware you need to flash
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  9. Set Start address to 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 following prompt indicates that the firmware flashing is complete
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Tip

After flashing, you need to completely power off the motherboard once.

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