Firmware update on Developer Board

It's important to regularly update your Developer Board to ensure that you have access to the latest features and bug fixes. This page will guide you through the necessary steps to update the firmware of your Developer Board.

Note

This guide assumes that you're familiar with the basics of the command line. If you're new to it, we recommend checking out these Windows or macOS/Linux command line tutorials.

If you’re not, please refer to the Windows or MacOS / Linux command line tutorials.

Step 1. Install the micro Flipper Build Tool

micro Flipper Build Tool (uFBT) is a cross-platform tool developed and supported by our team that enables basic development tasks for Flipper Zero, such as building and debugging applications, flashing firmware, creating VS Code development configurations, and flashing firmware to the Wi-Fi Developer Board.

On Linux & macOS:

Run the following command in the Terminal:

python3 -m pip install --upgrade ufbt

On Windows:

Download the latest version of Python on
Run the following command in the PowerShell
```
py -m pip install --upgrade ufbt
```

Step 2. Connect the Devboard to PC

To update the firmware, you need to switch your Developer Board to Bootloader mode, connect to a PC via a USB cable, and make sure that the PC detects the Developer Board:

List all of the serial devices on your computer.
- macOS: Run the ls /dev/cu.* command in the Terminal.
- Linux: Run the ls /dev/tty* command in the Terminal.
- Windows: Go to Device Manager and expand the Ports (COM & LPT) section.
Connect the Developer Board to your computer using a USB-C cable. \image html https://cdn.flipperzero.one/Flipper_Zero_Wi-Fi_devboard_update_wired_connection.jpg width=700
Switch your Developer Board to Bootloader mode:

3.1. Press and hold the BOOT button.

3.2. Press the RESET button while holding the BOOT button.

3.3. Release the BOOT button. \image html https://cdn.flipperzero.one/Flipper_Zero_Wi-Fi_devboard_reboot_to_bootloader.png width=700
Repeat Step 1 and view the name of your Developer Board that appeared in the list.

Step 3. Flash the firmware

On Linux & macOS:

python3 -m ufbt devboard_flash

On Windows: Run the following command in the PowerShell:

py -m ufbt devboard_flash

You should see the following message: WiFi board flashed successfully.

If flashing failed

Occasionally, you might get an error message during the flashing process, such as:

A fatal error occurred: Serial data stream stopped: Possible serial noise or corruption.

FileNotFoundError: [Errno 2] No such file or directory: '/dev/cu.usbmodem01'

To fix it, try doing the following:

Disconnect the Developer Board from your computer, then reconnect it. After that, switch your Developer Board to Bootloader mode once again, as described in
Use a different USB port on your computer.
Use a different USB-C cable.

Step 4. Finish the installation

Reboot the Developer Board by pressing the RESET button. \image html https://cdn.flipperzero.one/Flipper_Zero_Wi-Fi_devboard_reboot_after_flashing.jpg width=700
Disconnect and reconnect the USB-C cable.

You've successfully updated the firmware of your Developer Board!

If you followed the Get started with the Devboard guide, you're ready for the next step: Step 3. Plug the Devboard into Flipper Zero.

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