Thread: Transform a Nuvi 37xx in a Nuvi 34xx for dummies

Originally Posted by lolypop000

Anybody find out how can you change nuvi ID in region 41?

That's very simple. Change UnitID in region 34 and save it as 34_m.bin. Put this file on SD card.
Execute batch:
xrgn,34,1:/34_m.bin
ergn,41
xrgn,34,1:/34_m.bin

Attention:
You will get 34xx instead of 3790 or 3760 etc.
Also you'll probably lose blue tooth, but this can be easily recovered.
P.S. This worked on 3790 flashed to 3490.
Where 34_m.bin is a region 34 with modified UnitID.