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How Do I Reinstall the Basemap for My Garmin Wearable or Edge Device?
Garmin Express™ software has the ability to reinstall the basemap on your Garmin® watch or Edge® cycling computer if it has been mistakenly removed or deleted from your device. This process will reinstall the basemap if your device detects that it's missing:
Connect your device to your computer using the Garmin branded cable.
Open Garmin Express.
After syncing, select Map Details.
Click Map Options.
Click Reinstall Map.
Located under Cycle Map for Edge cycling computers.
Located under TopoActive for wearables.