These symptoms are all related to erasing rgn41. That's quite different to clearing nonvol. Region 41 contains your unit's registration and unlock codes and other info which is no longer written in there so your legitimate maps cannot be reinstalled by GE/MU.
Don't know what is with GE but with map updater you can update map after erase reg 41
If you wish, you can [Only registered and activated users can see links. ]
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