Had a read of the tut's and got rather confused being an historic tomtom man. It it possible to add usa maps to an sd card and run them against the normal Europe maps. Can anyone tell me what tut to follow?
I've just done the opposite bought a US 2597 and installed the Europe maps onto SD card. Followed the 'loading maps tutorial' ie (format sd card with fat32, create Garmin folder and just drop the gmapsupp.img straight into the new garmin folder on sd card. Then create JCV folder in the garmin folder and drop JCV file in there.
On reboot device should load extra maps and show in installed maps on your device. You just have to change country in Find new Address menus when searching for addresses as unit doesnt seem to find towns unless you have set country first.