I'm trying to get JCV working for North America map, I use D3478140A.jcv from [Only registered and activated users can see links. ] and put it under <internalStorage>\Garmin\.System\JCV but I don't see any different on map. Is there a way to check to see if it's using the JCV file or turn JCV on/off? My phone is running 4.4.2 so <internalStorage> path is \sdcard0