config.g disappears
-
The easiest way is to upload the full zip file to the system tab in DWC.
https://github.com/Duet3D/RepRapFirmware/releases/download/3.4.5/Duet2and3Firmware-3.4.5.zip
If that still doesn't do it, you can to a more manual process here:
https://docs.duet3d.com/en/User_manual/RepRapFirmware/Updating_firmware