Thread: How to convert 3790us to 3790 Sg/My

Originally Posted by aekhong

Kenokin.,
When did your 3790 lost visibility of gmapdem.img., after went to CHN2.20 ??
Can you see the main detailed map?

turboccc converted his 3750 to CHN2.20 and he got 3D., DEM ability.

It's really hard to say for me when it happened. I didn't checked all functions after each flash.
Right now - after my travel - I'm sure that routing is working properly, JCV, TMC, etc also. Only problem is with DEM as described.

File gmapdem.img in my Nuvi is 460 MB (483 229 696 bits).
I wrote to Garmin support as well. We'll see (if) what they respond.