Recovered my P3S last evening in the woods after it autolanded in the trees just 75 feet from the waters edge of our local lake. Props nicked up but no camera nor drone damage. I cleaned it up and inserted an fully charged battery and it acted like it was going through a new FW update all over again. It had just updated to latest version on Jan 15th, 2017. Flight data shows all settings correct and GPS good and RTH alt. 165 ft during crash flight Jan 15th.
When ready for take off yesterday , Jan 16th, I get a RTH setting of 0 ft. !! Did the firmware reset this? I tried to reset to 50 meters and it refused because the max. alt. setting was again, 0 ft. !! I had never changed that manually in the past 5 months of flying and never had a problem before this FW upgrade. Will post a video of the crash from camera on YouTube today. I have never had a crash after a FW upgrade; actually never crashed at all except tree snags of no consequence; this is the first. Unnerving !!
I did fly it once yesterday after re-setting RTH and max alt. Up 200 ft and away 80 ft. Hit RTH and it did return and begin autolanding until I stopped and manually landed. Appears to work well now.