Internal operating software updates for most Garmin devices are available through either Garmin Express or the WebUpdater, which are both on the Garmin website, as of 2015. Map updates are also on the Garmin website under Update Maps.
To update the internal operating software on a Garmin device, download Garmin Express or the WebUpdater. After the installation is complete, follow the onscreen prompts. Check WebUpdater often to find the latest updates for Garmin devices.
Download Garmin Express to update maps on a Garmin device. Garmin Express indicates whether the user must purchase updates or if the account already has lifetime updates.