A Garmin Connect account is required to utilize the Garmin Express software and get 'Garmin express updates' After you've updated the maps, you can save and distribute them across Garmin devices. Garmin Express app updates are accessible on Garmin.com for those who own Garmin devices. Garmin Express allows you to restore your data as well as upgrade your device. As a result, frequent Garmin Express updates may assist in keeping the data on your device up to date.