Hi everybody,
I have updated the software in my Nuvi 3790 to ver. 4.30.
Since then, I cannot see any other maps than officially acquired from Garmin with gma authorization code. Even if is in Garmin internal memory or SD card.:angry:
I have officially bought Hungarian, Romanian and Adria maps and even these maps are not seen anymore.
I have tried to reinstall and resend these maps to unit SD but nothing happened.

Does anybody knows if Garmin started to use a hidden application in firmware that protects using unofficial maps?

Any info will be much appreciated. Even if is necessary and how to to get back to ver. 4.20