Quote Originally Posted by RocketRon57 View Post
Midnight Blues if your around I have another couple of questions for you.

I now have both the Thailand map and the European map loaded in the internal memory of my nuvi, I have renamed one as gmapprom.img and the other as gmapprom1.img the unit does not recognize gmapsupp.img files.
My first question is If I want to load any more maps can I simply rename them gmapprom2.img, gmapprom3.img etc, etc or is it more complicated? and secondly the maps are currently in Garmin\System folder of the internal memory if I want to put maps onto an SD card should I put them into a folder named Garmin or Garmin\System.
TIA.
The answers you have been getting are good but incomplete
Your device allows you to use any name for a map that you like boo.img hello.img etc I use ThailandV9Eng.img and IndoChina.img so I remember whats what.
You have to make a folder called map on the unit then your gmapsupp.img will work also

Not like the old nuvi's 775 255t etc yours behaves quite differently
If you used mapsource to add a map to your nuvi 1*** it would have created the map directory for you
You can add maps to Garmin folder in the system hidden area but you will be limited buy the old names and gmapsupp.img will not work there
How ever if you use the map folder your only limit is unit memory

I hope this clears up things for you and others
I think Cath will be updating the how to soon