Trail Guide ™ Owner’s Manual ENappendIx > addInG maps to your traIl GuIdeAdding Maps to Your Trail GuideYou can purchase additional MapSource® maps from Garmin foryour Trail Guide.Purchasing Additional MapSource MapsIn order to unlock and use additional MapSource data, you needyour unit ID number (see page 40) and serial number (seepage 51). After you unlock your map data, you can transfer it tothe Trail Guide using MapSource and your computer.Note that the preloaded maps on your Trail Guide are protected andcannot be erased. For example, if you add additional maps to yourTrail Guide, you will not overwrite the original maps. If you loadadditional maps to the Trail Guide, these maps are not protected.The additional maps are overwritten each time you load new mapsto the unit.Controlling Map Views on the Map PageYou can view a list of your map families on the MapSourceInfo page.To view the installed maps:1. Press MENU, highlight Settings, and press OK.2. Highlight Map Info and press OK. The MapSource Infopage opens.Map families loaded Individual maps loadedThe MapSource Info page lists the MapSource maps that areloaded onto the unit. These are actually map families: each mapfamily may contain numerous smaller maps.
