You've gone radio silent on the Google map question. Are you still saying you can get Google maps to work on version 3.1.3, and if so please post a screen shot for us all, thanks. I'm assuming your on an Android device, as it is only Android that is at version 3.1.3 right now.DJI must pay for the maps.. Here maps are cheaper and google maps are more expensive.
If we consider the whole market I still think that more than half are happy with here maps and doesn't care. = DJI doesnt care