Wi-fish IOS app with Dragonfly 7

I am able to see the sonar views on my iPhone, but I can't see map views. In the help menu on the IOS Wi fish app, it says you have to download some map data first. The app doesn't provide any mechanism to download anything.

I assumed that the map displayed on the dragonfly would appear on the iPhone just as the sonar images do. I can't find any further documentation on this. Please advise