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Using Meshtastic Python Flasher


This method is no longer supported. Please use a supported method.


Make sure not to power the radio on without first attaching the antenna! You could damage the radio chip!


Meshtastic Flasher (aka m-flasher) is a graphical user interface for flashing supported devices with Meshtastic. The following operating systems are currently supported: Windows, Mac, and Ubuntu.


Verify that Python3 is installedโ€‹

Check python3 version
python3 --version
# If version is less than v3.6, please update python3

Install or Update Python3โ€‹

Install python3, pip, and venv
sudo apt update
sudo apt upgrade
sudo apt install -y python3 python3-pip python3-venv

Install or Upgrade Appโ€‹

For Windows, the installer will manage installing python and flasher updates automatically.

For macOS and Linux, it is recommended that you install using pip.

Note: Update an existing installation using pip install meshtastic-flasher -U

Install Meshtastic Flasher
python3 --version
# ensure you are using at least python v3.6
# change to a directory where you want to create a python virtual environment
mkdir some_dir
cd some_dir
# if the following command fails, it might tell you what package to install
python3 -m venv venv
# activate the python virtual environment
source venv/bin/activate
# your prompt should change - it should include "(venv) in the front
# upgrade pip
pip install --upgrade pip
pip install meshtastic-flasher
Running Meshtastic Flasher

Flashing the Deviceโ€‹

The Meshtastic Flasher will flash the latest firmware on esp32 and nrf52 devices. This is a newly developed application (as of February 1, 2022), so there may be some issues discovered as it is tested by users.

There are three steps:

  1. Click the GET VERSIONS button to get the versions available (from GitHub).
  2. Click the DETECT DEVICE button to determine the port and device variant connected.
  3. Click the FLASH button to flash the version selected using the port selected to the device.


If you run into an issue, please create a ticket here: Flasher Issues

The code can be found at the Meshtastic-gui-installer repo

Known limitationsโ€‹

The following are known limitations:

  • Raspberry Pi is not available, since it is arm-based and there are no pre-built libraries for PySide
  • Ubuntu 20.04 is the version used for testing, it may work with other versions.
  • See README for more details.

Connect and Configure Deviceโ€‹

After flashing the Meshtastic firmware to the device, you can proceed with the initial configuration.