These upgrades are specific to the specific gps units and software versions listed. I think the mapsource documentation covers how to use multiple maps. Openfietsmap is a free routable cycling map for garmin gps mapsource, based on openstreetmap data. Maps designed for cyclists, showing cycle routes and infrastructure, and emphasising useful amenities. Mit mapsourceinstallern, autoroutingfahige osmkarten. I want to select viewswitch to product and see my dominican republic map in the list. Free worldwide garmin maps from openstreetmap, available in basecamp, mapsource, roadtrip and gmapsupp formats for windows, mac osx and linux. Garmin datacards and other data storage cards such as sd cards can transfer all mapsource data types. Free worldwide garmin maps from openstreetmap, available in basecamp, mapsource, roadtrip and gmapsupp. This download area offers free firmware upgrades for select garmin units. Garmin mapsource is a shareware software app filed under mapping and made available by garmin for windows. Mapsource products provide geographic data in cdrom format that can be viewed on a pc. I simply want to download a routable map of the dominican republic to mapsource on my computer. This software should only be uploaded to the unit for which it is intended.