"I can fix my problem. I set the timing from medium to high on my hobbywing quattro 4in1 25A esc, and now after autotune the copter fly well :)"

"I have the same problem. Exactly the same. Is there a solution or at least a reason why is this happens? My first tought was that the motor-frame config is the problem 500mm carbon frame 3508 700kv motor, 11*47 props, maybe 600mm frame would be…"

"Unfortunatelly after the esc calibration when I tried to spin the motors they work well, but however in normal mode, when I pushed the safety swich to disarm, the esc-s went to programing mode so I tried to recalibrate the esc-s but with no luck.…"

"YES! I tought the same compared the pictures I have found in this case, and it works. At least I can calibrate my esc-c, but I have some pre arm chech fail, so I did not tried when it is armed, I hope there would not have any problem. Thank for your…"