You need to be connected to internet (not to the spark) and from main screen of GO 4 app, there is a /// (3 bars) menu at top right. In this menu select "offline map". It need first time to download the list of all existing maps. Then you can select which countries map (simple one, no satellite map) you want to download. Later you can come back to this place to add/remove app or update them using the "Map Management" panel. Good fly.