Ok so before I unpacked and took my first flight with my Phantom v18.104.22.168 I googled and came on here first. I did the update on naza. I calibrated. Felt like I did everything to the "T". it has flown perfectly. I nearly always fly in GPS mode (always actually). I wait until it is blinking all green and has found enough satellites to do so. Then this weekend I am letting a friend fly it. I am not 100% certain but pretty certain we did normal preflight routine and lights green. It goes up like normal and as he moves it forward about 20 meters off the ground. all of a sudden lights turn red and yellow flashing and it takes off on its own and not responding to controller. just keeps on at same elevation and same course he sent it. I try to get it into fail safe mode and turn off receiver but nothing. turn back on .. nothing. I start running after it. I give up looking and will just come home empty handed. there it is upside down in the culvert about 1/2 mile from home still flashing red and yellow but motors off at least. completely intact including prop guards. a little dirty but no scratches even. we go home and thank jesus and baby jesus. so today I go through whole recalibration including recalibration of compass and imu basic and advanced calibration it flies just fine. i am trying to recreate anything similar. I fly about 1 foot over my wife's car as if I was going to land on it. again flashing red and yellow but it is responding to the controller still. I'm at a loss as to what to do about the whole thing... i trusted this thing perfectly and have turned controller off before to activate the fail safe. thoughts?