Installing Maps for Garmin Basecamp [ MAC ]

Basecamp Map Installation [ MAC ]

Installing and Unlocking Backroad MapBooks on macOS

1. Prerequisites

Tip – Keep the ZIP file in your Downloads folder for quick access.

2. Downloading the Map Archive for macOS

  1. Log into the Backroad MapBooks website

    • Open the URL above and sign in.
    • If you have no account, click Create New Account and follow the prompts. Login screen

  2. Navigate to “MY GPS Maps”

    • Click the MY GPS Maps button to open the registration page.

  3. Locate your product

    • Find the row for your province (e.g., BC2025).
    • Click the small arrow to the right of the product title to expand its details. Product row

  4. Download the macOS ZIP

    • Click the Download for MAC button.
    • Choose a location to save it (default is the Downloads folder).

  5. Download the .gma unlock file

    • Scroll down to the Unlock Information section and click the link to download your .gma file. Unlock file

3. Installing the Maps

  1. Open the downloaded ZIP

    • Navigate to where you saved the file.
    • If it hasn't already extracted, double‑click the ZIP to unpack it (you should see a folder named SECURED_BC2025_BRMB_BC2025-Mac).

  2. Mount the DMG

    • Inside that folder you’ll find a .dmg file (e.g., BRMB_BC2025.dmg).
    • Double‑click the DMG to mount it.
    • If you get a “Not from the App Store” warning, click OK and then Open the installer.

  3. Run the installer

    • Double‑click the installer icon that appears inside the mounted volume.
    • Follow the on‑screen prompts (accept the license, choose an installation directory, and finish). DMG folder

  4. Allow apps from unidentified developers (if needed)

  5. Follow the installation steps

    • The installer will show a welcome screen, license agreement, and a final confirmation screen.
    • Once finished, you’ll be ready to unlock the maps.

  6. Complete the installation

    • Follow the on‑screen prompts (welcome, license, install location).

    • Typical screens:

      Welcome
      License
      Install directory
      Finish

4. Unlocking the Maps in Garmin Basecamp (macOS)

After the installation above, follow the unlocking instructions at:

https://brmb.support/books/3mac-gps-support/page/unlocking-maps-in-basecamp-for-mac

(This page walks you through importing the .gma file into Basecamp and unlocking the content.)

5. Troubleshooting

Problem Fix
Installer won’t launch – “This app cannot be opened because it is from an unidentified developer.” 1. Open the installer once.
2. Close it.
3. Go to System Preferences → Security & Privacy → General and click Open Anyway.

6. Need More Help?

We’re here to help you get your maps up and running as quickly as possible!

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 –

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).

Unlock key locations

The file is always named .gma – the name will differ based on the card’s update status.

Example file names

2. Open Map Manager

  1. Navigate to the folder containing the .gma file.

  2. Double‑click the .gma file.

    A “Map Manager” window appears, asking whether you’d like to install the maps.

    Map Manager prompt – Install

  3. Click INSTALL to start the unlocking process.

    Map Manager prompt – Confirmation

3. Verify Successful Unlock

Once installation completes:

  1. Open Garmin Basecamp.
  2. Go to Maps → Manage Map Products.
  3. 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?

We’re here to help you get your maps up and running as quickly as possible!