sorry for late reply.. yes I can see nuvi model 3790 and Unit ID listed.

Upon converting to 34xx, I used the Mod_2xxx.exe to update reg_140.bin to enable all features successfully but 3D feature,voice command,video player were not enabled. I think because of sw 7.10 I was not able enable these features. Where can I download the old firmware?

Quote Originally Posted by catymag View Post
Can you check what do you have in Settings/info ?
Can you see as nuvi model 3790 or 37xx ? Do you have your device ID listed ?