When the app detects a new available firmware version, it will notify you with a dialog message, such as this one. You can also check for firmware updates manually by starting it from the app’s Device diagnostics page.
If you are currently not connected to your charging station, the firmware update will be stored in your phone’s local storage. The update will prompt you to install once a connection to the charging station is established.
When the firmware update is successfully installed, the charging station will need to restart.