I dowloaded unlocked GMAPPROM.IMG file (2.06 GB), plus GMAP3D.IMG (369 MB) and D2504030A.JCV (665 MB) from post 2. I renamed gmapprom for gmapsupp, I put both img in folder Garmin (SD card) and JCV file in JCV folder.
Now in my Nuvi 3790 I only see map "CN Europe NT 2011.40 ALL", I can't see 3D map, I don't know if JCV is working. What did I wrong?, do I have to change name of Gmap3D and JCV files?
Yes, I am a newbie with a Nuvi 3790.
Thanks in advance.