Unlocking Maps in Garmin Basecamp [PC]

Unlocking Backroad MapBooks in Garmin Basecamp – PC

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

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.