Your question has too little detail to get a meaningful answer. Please describe what you want to accomplish, what you did, and what did not work. If you are trying to use OSM maps on a Garmin device using MapSource, have a look at https://wiki.openstreetmap.org/wiki/OSM_Map_On_MapSource
Your question has too little detail to get a meaningful answer. Please describe what you want to accomplish, what you did, and what did not work. If you are trying to use OSM maps on a Garmin device using MapSource, have a look at https://wiki.openstreetmap.org/wiki/OSM_Map_On_MapSource