Hi Bob,
a standard Rosetta-only set up might not need a visible status LED. However I am using a PAW Rosetta+Flarmbat+2 Flarmbooster.
Your thinking: No SD Position = Rosetta not working has its limitations here. E.g. the GPS is coming from the Flarmbat and could be a cause.
So that aside, if you have any ideas to contribute to the solution, that is well appreciated.
Kind Regards,
Patrick