BL Firmware

tip

• Please note the bootloader has already been pre-flashed at factory, no need to flash again

Enter Flash Mode

tip

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

• There are two methods to enter flash mode
• First: With the tool board completely powered off, press and hold the BOOT button, then connect one end of a data-capable TYPE-C cable to the main board and the other end to your device
• Second: After connecting one end of a data-capable TYPE-C cable to the main board and the other end to your device, press and hold the BOOT button, then press the RST button, release the RST button first, and finally release the BOOT button
  

Flash Firmware

Windows Flash Tutorial

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

Note

• USB3.0 may fail to flash, please try to use the computer's USB2.0 for flashing
• If flashing still fails, please try using the host computer to flash
• If the following error appears, please use a USB hub
  

1. Flashing tool Download Link
2. Please download SetupSTM32CubeProgrammer and STM32 DFU driver
3. Download the firmware to any directory on your computer
4. Connect the main board to the computer using a Type-C cable, and ensure it has entered dfu flashing mode
5. In STM32CubeProgrammer, select USB mode, then refresh and connect
   
6. If no error pop-up appears, the connection is successful.
   Warning

   If the following screen appears, it indicates a computer or software issue. Please flash using the host computer: Host Computer Flashing Tutorial

   
7. Click the download icon on the left and select the options below
   
8. Click the Browse button as indicated by the arrow, then select the firmware you need to flash
   
9. Select Start address and enter 0x08000000
   • Please note, if the firmware is in HEX format, please skip this step!!
   
10. Click Start automatic mode at the bottom to begin flashing the firmware
    
11. The following prompt indicates that the firmware flashing is complete
    

tip

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