having the same issue with a Typhoon H Plus I recently bought. Yes, 5 taps of the compass calibration into the hidden menus - gyro calibrates, but the C23 sticks in 2 spots from going 360. Might be from not being used for. a while so coaxing it back to life with a nudge when it sticks for now. Only get to step 1 of the accelerometer calibration steps and it sits there forever.did you use the hidden menu?
if the accelerometer re-calibration didn't get past the first step, after installing the latest software for the ST16s Typhoon H Plus, would aborting the attempt at re-calibration leave the accelerometer in an unstable state or nothing was actually changed possibly?Yuneec has prevented access to the accelerometer and gyro calibration menus for several months now. They say there is not need for the user to calibrate those items. Most of us have not had any issues as a result of this.