New member, New to me E70. Not running

[E-series ftw]

Update and Question:

Update.
After running a hair dryer in the DME box for a half hour, the DME box fan error is now gone.
Sadly, the 02 heater code still exists, but I'll tackle that at a later date, as it is not a critical error at the moment.

I'm still doing research on the 00601D and 00601E error codes that have been there since day 1 and I'm hoping this coming weekend's task of replacing the plastic gear inside the transfer case servo will solve that issue, since I hear no servo noises at all under the vehicle.

Question:

I have no fog lights operation, despite the dash indicator coming on.
I get an adaptive headlamps warning after driving a 1/4 mile.

I have a 00E097 code for a faulty GWS receiver transmitter FRM

I have no other FRM-based issues.

Would these issues warrant purchasing a PROG 5.55 arrangement to reflash the FRM, or could this be just separate, isolated issues?