@PeterPerth
If you run unlock mapset.exe in the gmap folder it will unlock the entire map for MS and BC ,and also the image sent to the unit (or a drive if using patched versions) will be fully unlocked (i.e. not show as unauthenticated either): [Only registered and activated users can see links. ].

PS: Be nice to Stephon, afaik his method works ok and more importantly he's from Lizzie Borden country. Other methods also [Only registered and activated users can see links. ] to unlock the tdb file only if you want to try them.