This morning I had a fly away happen, First time for me. I did not think it would happen to me. But fail safe did work What Happened? I went to the same place I did flying last weekend (A local Park). Last weekend I calibrated the compass, so today I did not. I checked both switches on transmitter were in the upper position. Turned on Wi range ext and transmitter Put battery in vision and turned on. Connected ipad to Wifi. Checked the number of satellites detected. Num = 9 Green Light on Vision So I started up and started flying. everything was going good till about 10 minutes into the flight. The vision would not stop going in the direction it was heading. It disappeared over a building and I lost sight of it. lost video on ipad. So I pushed Ascend up for a bit, still could not see it. I then switched to fail safe and about 5 minutes later it was above me. but seemed to be unstable I switched to ATTI and landed it. I turned off the vision and put another battery in it and tried to calibrate the compass, it would not go into calibrate mode. Since getting home I have taken the propellers off and have been able to calibrate the compass. It is on firmware 2 maybe its time to update?