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BL Firmware

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

Entering Flash Mode​

tip

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

  • There are two methods to enter flash mode.
  • First method: With the tool board completely powered off, press and hold the BOOT button, then connect a data-capable TYPE-C cable from the mainboard to your device.
  • Second method: After connecting a data-capable TYPE-C cable from the mainboard to your device, press and hold the BOOT button, then press the RST button, release the RST button, and finally release the BOOT button.
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Flashing Firmware​

  • Katapult firmware for E3-PRO-Ultra
    • Click the download link below.
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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
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  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
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  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

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

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

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