Guys after the firmware update i get unstable flight after as little as 30 secs of staying in the same position. Ive read all the posts and it seems no real solution exists tomsolve it aside from tne manufacture replacing the electronic controls. The first time the toilet bowl occured i did the obvious thing which is attempt to stabilize through the controls in Angle flight mode. It spiraled and bringing it down without a crash was impossbile. It was a thick grassy bed so it flipped as the landjng gear touched but no damage. I read several threads and although no one has solved it despite compass calibrations facing north and accelerometer calibations on a level surface someone did suggest turning off the gps while in flight. I tried it and its a Lifesaver. If your drone is toilet bowling out of control and your runnjng the new firmware on the st 16. Deactivate the gps and flight will become stable enough to land. It will drift a little due to wind but much more landable than a crazy spiral. Now for those who dont have warrenty do you think replacing the gps board will solve the issue. I am curious if its a bad board or if its firmware related. Thanks for your thoughts.