Skip to main content

BL Firmware

Tip
  • Please note that the bootloader is already pre-flashed from the factory, so there is no need to flash it 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 a TYPE-C cable with data transfer capability to the mainboard and the other end to your device.
  • Method 2: After connecting one end of a TYPE-C cable with data transfer capability to the mainboard and the other end to your device, hold down the BOOT button, then press the RST button, release the RST button, and finally release the BOOT button.
    Loading...

Flashing Firmware​

  • Katapult firmware for the E3-PRO-Ultra
  • You can obtain the firmware via the following link:
  • The firmware is located in
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.
    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...
Tip

After flashing is complete, you need to completely power off the mainboard once.

Loading...