Unlocking Maps in Basecamp for MAC

Unlocking BackroadMaps in Garmin Basecamp for macOS 
 
 Goal – Import the .gma unlock key so your BackroadMaps are activated in Basecamp on a Mac. 
 
 
 Prerequisites – 
 
 Garmin Basecamp and Map Manager installed on your Mac. 
 A .gma file either downloaded from your Backroad Maps account or located on the microSD card in the Garmin folder. 
 
 
 
 1. Locate the .gma Unlock Key 
 
 
 
 Source 
 Where to Find It 
 
 
 
 
 Your account 
 Log in to the Backroad Maps portal → My Unlock Keys → download the file (usually named YourUnlockKey.gma ). 
 
 
 microSD card 
 Inside the microSD card → Garmin folder → file gmapsupp.gma (if the card hasn’t been updated) or YourUnlockKey.gma (if the card has been updated). 
 
 
 
 
 
 The file is always named .gma – the name will differ based on the card’s update status. 
 
 
 
 2. Open Map Manager 
 
 
 Navigate to the folder containing the .gma file. 
 
 
 Double‑click the .gma file. 
 A “Map Manager” window appears, asking whether you’d like to install the maps. 
 
 
 
 Click INSTALL to start the unlocking process. 
 
 
 
 
 3. Verify Successful Unlock 
 Once installation completes: 
 
 Open Garmin Basecamp . 
 Go to Maps → Manage Map Products . 
 The relevant BackroadMap entry should now display “Region unlock code from …” next to its name, indicating it is unlocked. 
 
 
 4. Troubleshooting 
 
 
 
 Issue 
 Likely Cause 
 Fix 
 
 
 
 
 Map Manager doesn’t open when double‑clicking .gma 
 File not recognized 
 Verify the Map Manager application is installed. 
 
 
 Security block (“This application cannot be opened”) 
 macOS Gatekeeper 
 Use System Settings → Security & Privacy → General to allow the file, then retry. 
 
 
 
 
 5. Need More Help? 
 
 Phone – 1-877-520-5670 
 Submit Support Request – > https://backroadmapshelp.zendesk.com/hc/en-us/requests/new 
 
 We’re here to help you get your maps up and running as quickly as possible!