Hi, I'm new in this forum.
I have come here looking for a solution for my pixhawk, but I have not found it.
I have an F450 that was flying well. I upgraded to version 3.5.7 and started flying by moving a little to the left (it also suffered a blow, I do not know which of the two things caused it, whether the update or the blow).
The fact is that I thought it was because I had not calibrated the ESCs. I tried to calibrate them like other times but I did something wrong and now I can not calibrate them or build the drone to fly.
As you can see in the video, in calibration mode I'm going up the gas and the engines start from less to more until they stop and so on several times while I'm raising the gas. I do not know, something strange happens.
I try too downgrade to 3.3, 3.3.3, and others versions, but I always get solid red light on pixhawk that indicates error and I can´t do nothing. I do not know why.
By the way, the ESCs are these: Racerstar RS20A 20A BLHELI_S