If you want to download free Garmin GPS map update. You have two ways to download free map updates. Select your way and download updates in your GPS device. Here is the instructions that how to update Garmin GPS map. When you update the latest version you need to know about installing software and its help to locate the geographical information when you traveling one place to another place. Garmin express is a software which help to update, download and install the latest maps in your Garmin device.