I just flashed the latest stable px4 firmware 1.5.4 to my AUAV-X2. Stabilized seems to be okay but if I switch to altitude control I loose controls. Throttle Stick is at mid position when switching to altitude control and the copter shoot up in the air, lowering the stick to zero doesn’t help and the copter is not descending. It is not controllable at all with standard setting.
What do I need to do to get it work. Is it a flight controller problem?
I have an exact same frame with a pixracer 1.5.3 and it seems to work perfectly fine there.