Steps to download map for iGS620 or iGS618:
1. Enter webpage: http://global.igpsport.com/home/download
2. Choose and download the map of your country.
3. Power off the device, connect the device to a computer.
4. Short press left button,the device will be recognized as a new disk.
5. Import the map into your device under "navigation"file.
Guide video : https://www.youtube.com/watch?v=eUMVXitj8YU