"Yes I just did that last night and worked. From firmware version AC 3.0.1 they change this parameters from 0 to 1 but also there is some problem with the voltage sensing after AC 3.0.1 see my discussion on…"
"Ok I am relatively new in multicopters but maybe this can help you
3DR Original APM 2.0 whit on-board GPS V2.4.1 , firmware version AR 2.43 AP 2.76 AC 3.0.1 everything is ok more than 50 flights
After this I am Installing new firmware AC 3.1.2…"
"Hi I have the same problem ACRO_BAL_ROLL/PITCH did you fond solution for this issue ?
I was tuning the PID parameters and just to start on fine tuning this message appears ! Arming is only possible if Prearm check is disabled !"