After changing the flight path on my Iris ( not Iris+) one motor does not spin, it just jiggle. It seems like the ESC is trying to hold the motor in place. It is harder to turn the motor by hand when it has power than when it is off. I did the ESC calibration, I also changed the faulty motor but the problem is the same.
It is my first drone and I have no clue how to solve this problem. Can somebody help me?