hi catymac,
I rename bgb.img to gmapsupp.img and copy it to the garmin directory of my sd . I see now it installed as a map and unchecked the US map that is in the unit, so the gps works just with one map, but I was surprise that cannot see anything on the screen. Have you any idea of why is that? My unit is a Nuvi but even that would love to use the Topo. Please if you can help me I would appreciate that, thanks in advance