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

Originally Posted by Butters

Are you sure they are actually missing,

Code:

Please Login or Register to see the links

Originally Posted by Butters

perhaps rather they're protected against copying?

I suspect that "NV configuration" role is now played by region 13 (0x0D), 2MB in size.
It, like regions 41 and 154 before, contains UnitId and references to maps installed in the device.

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.?

Originally Posted by Butters

Is rgn13 encrypted...?

No, region 13 is not encrypted.

Spoiler: Approximate structure of region 13:

Code:

Please Login or Register to see the links

Spoiler: attached

[Only registered and activated users can see links. ]