In "Map" not "maps" folder you must use anyname.img ,not gmapsupp.img,
gmapsupp.img is recognized probably just in sd "Garmin" folder, just one in Garmin folder, in "Map" folder you can have many anyname.imgs.
read
[Only registered and activated users can see links. ]
and
[Only registered and activated users can see links. ]


if you take a look at tutorials you'll find interesting infos They have been collected for user's convenience

[Only registered and activated users can see links. ]