You do so with the command line tool “meshtastic”, but first you need to connect the board to a computer with Python installed.
Very briefly:
- check that your computer has the required drivers installed, if not download them from here.
- check that your computer has Python installed
- check that your computer has “pip3” installed, if not follow this guide
- install the meshtastic tool. Instructions here.
- the command “meshtastic -h” will give you a (partial) list of the available commands