I have an OSM img map for Japan for my Zumo 396. I loaded it onto an AD card. It shows up on the Zumo under "maps". I have it selected. Nothing shows but the base map.
When I plug the Zumo in basecamp the map shows just fine.
Edit: I tried a differnt method. I downloaded a differnt OSM map with basecamp map installer. The map loads fine into base camp. I used basecamp/map installer to install the map. It works fine. Then when I load of the Zumo it shows the map was installed. But the map is blank. It is a differnt map in that it shows major roads, but even less detail than the other non working map. Everything but a few major roads is just black.
