Garmin Express application.
The small end of the cable connects to the mini-USB port on your Garmin Drive™ device and the large end connects to an available USB port on your computer.
The Garmin Express application searches for your device and displays the device name and serial number.
When setup is complete, the Garmin Express application displays the updates available for your device.
To install all available updates, click Install All.
To install a specific update, click View Details and click Install next to the update you want.
The Garmin Express application downloads and installs the updates onto your device. Map updates are very large and this process may take a long time on slower internet connections.
For example, during the update process, the Garmin Express application may instruct you to disconnect and reconnect your device.