Thread: How to backup Nuvi NV (region41) with sd

Originally Posted by VadimK

I suspect that "NV configuration" role is now played by region 13 (0x0D), 2MB in size.

Likely your suspicion is valid.

It, like regions 41 and 154 before, contains UnitId and references to maps installed in the device.

Is rgn13 encrypted like the NV region of modern automotive devices and did you need to de-crypt to see UID etc.?