To begin, you must first determine your device model, which is free to update. If this is the case, proceed to the Garmin Map Update instructions. 1. Install the Garmin Express program on your computer. 2. Install it and launch the Garmin Express app icon. 3. Now, using a USB device, connect your Garmin device to your computer. 4. Now, select Check for Updates from the drop-down menu and wait for installation. 5. Finally, unplug your device from your computer and turn it on again.