Numaps subscription must be a best way to update maps of Garmin device. In case if you not have any subscription, contact to Garmin website to have it. But make sure nuMaps subscription will work only with Garmin Express application. So, you must have to download this application first. STEPS TO ACTIVATE NUMAPS SUBSCRIPTION There are certain steps below which will lead you to have instant update for maps. Sign In with your Garmin account or create a new one if you not have any. Now enter your details with nuMaps product key. There will be a option “Activate my subscription”, click on this option. If you receive a prompted message click on allow and activate lifetime map updates. You will receive a notification if any Garmin map update available. If yes than download and update every map by using Garmin Express application. There are different kinds of map updates provide by nuMap. Some of them are listed below. Road maps Water maps Trail maps Green maps City maps ...