I'm not sure if this is the correct place to post this. So to the admin if is not correct take the proper measures.

I have a boss system that i recently buy and trying to back up my maps something happen in the PC and the maps seems corrupted because the Ndrive inform that nonmaps are seen whe i lunch it in the car.

Basically im not sure what type of system for navigation i have.
The data i found:
model of the stereo: BOSS BV9384NV
map version (i found serching inside the srereo): TO-NAM-USA Version 2.21
Tom-Tom

as far as i underatand there are multiple platforms under NDrive so my question is:

How can i fix that problem? "no maps located"...

thx people

Easy just take the ad card out of the slot that it is in and move it over to the one next to it. Ok.