You need to also put the GPS in Mass Storage Mode.Quote:
Originally Posted by Alex Choo [Only registered and activated users can see links. Click Here To Register...]
I don't have a 3790 but here's how it's done on a similar model. Try this!
To get into Mass storage mode....
go to the GPS speaker/volume screen and hold upper Right Hand corner ~10 sec until you get a hidden menu
from the pop-up menu select "MTP Settings"
There you should be able to a select Mass Storage Mode option
The device now looks like normal USB drive