Garmin Express software is required to ensure that your Garmin devices are always up to date. Download Garmin Express from Garmin.com/express update. To begin, you must create a Garmin account. After connecting a Garmin device, the Garmin Express app starts and directs to Garmin.com/express update. Gramin device-specific updates would be shown. If automatic updates are disabled, you will be prompted to install the new firmware. To do an update manually, go to Garmin.com/express update.