Buspirate v3.6 firmware upgrade from USB

Buspirate v3.6 firmware upgrade from USB


Upgrading Firmware

The Bus Pirate ships without the latest firmware, necessitating a manual update by the user.

  • Buspirate v4: Supports firmware version 7.
  • Buspirate v3.x: Supports firmware version 6 & 7. Note: Firmware version 7 may potentially damage the device hardware as it has not been fully tested. Proceed with caution and at your own risk.


  • Bus Pirate firmware and loader available at DangerousPrototypes GitHub.
  • ICSP pins, with a focus on “PGD” and “PGC” for firmware loading. When in bootloader mode, the MODE LED of the Bus Pirate remains lit. Connect the “PGD” and “PGC” pins using a jumper cable as illustrated.
Image Alt Text Image Alt Text

Firmware Upgrade Procedure

  1. Clone the Bus Pirate repository from GitHub:
    git clone https://github.com/DangerousPrototypes/Bus_Pirate/
    cd Bus_Pirate/
  2. Navigate to the bootloader folder:
    cd Bus_Pirate/BPv3-bootloader/pirate-loader/
  3. Modify test.sh to change the port location. For Linux: /dev/ttyUSB0, for Windows: COMX (where X is the port number as recognized by Windows).
Image Alt Text
  1. Ensure PC to Bus Pirate communication. Successful communication will display results.
  2. Run the pirate loader command:
    ./pirate-loader_lnx --dev=/dev/ttyUSB0 --hex=BPv3-firmware-v6.2-r2162.hex --verbose
Image Alt Text

Known Issues

Firmware compilation may encounter errors. Ensure you are using the correct firmware version. For solutions, visit Dangerous Prototypes Forum.


© 2024 Mr-IoT