Unlocking Maps in Garmin Basecamp [PC]

If you skipped the .gma file during the initial map installation, you can manually import it to activate the maps.

1. Download the `.GMA` Unlock Key

Source	Where to Find It
From a device	Insert your microSD card → open the `Garmin` folder on the card → locate the `.gma` file (e.g., `gmapsupp.gma`).
From your account	Log in to your Backroad MapBooks portal → download the `.gma` file you received during purchase.

Start Garmin Basecamp.
If Basecamp detects any locked maps, a dialog will appear automatically.
- Click Unlock maps to begin the process.
- Screenshot:

If the dialog does not appear:
Open the Map Manager manually:
Maps → Manage Map Products in the menu.

In the Map Product Manager window, click the Unlock Regions tab (top‑left).
Click Import.
- A file‑open dialog appears.
- At the bottom right, change the filter from .ucx to .gma.
Navigate to the .gma file:
- If you keep the key on your microSD card, browse to E:\Garmin\ (or whichever drive letter your card is assigned).
- If you downloaded the key, go to the folder where you saved it.
Select the file and click Open.
Verify success – the map entry should now show something like “Region unlock code from …” next to its name.

Restart Garmin Basecamp.
From the Maps menu, choose Backroadmapbooks to load the newly unlocked maps.

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!