Hi All
I have garmin nuvi 350 and could not figure out why 2012.1 would not load. It is because some older models will take a 4gb card but not files above 2gb.
The answer is to load your own country onto unit and the rest of europe 2012.1 minus your home country onto a sd card this way the file will be under 2GB.
Create the rest using mapsourse.
Hope this helps.
Regards
Bill