To Export a Firmware use the Export Action on the Firmware that you want to export:
...
You can either copy the Firmware JSON Text or download directly as JSON:
...
If you are ready to share your firmware configuration or you just want to create an individual backup of your work you can export firmware. Navigate to the firmware screen and click the three dots at the end of the column of the firmware you would like to export. Then click “Export“. You will be presented with a source code dialog. You can now either copy the configuration or click the blue “Export“ button at the bottom of the dialog to download a file of your firmware.
...