Well, I didn't follow my own and others advice. I updated to firmware 3.1O. I have no issues all seems well. So I'm wondering should I downgrade or just keep, since everything is peachy... For now.
In the same boat. I got 3.1 by accident. It seems OK. I'm hoping my drone doesn't randomly do a full RTH (H being somewhere in Szechuan province China). But at the moment all is well.
I haven't tried out Ground Station. I hear some people on another forum saying they got a 25,000 km no-fly limit around various airports on ground station (?). With the earth being only about 40,000 km around that puts a bit of a crimp in where you can fly. But honestly I have no idea why this version was pulled or what the issue(s) are.