does anybody know more details about the rgn=<regnum> parameters?
Thats what I found so far:
49 = internal memory (278, streetpilots), special ~450MB memory of the 478
77 = a special ~1,35 GB memory of the 478
Is there a code to adress the data card as well?
This would allow to modify a gmapsupp.img before uploading (I think of transparency, draw order and naming)