I had an issue where my ESC where my throttle signal wasn’t detected, I then manually set the throttle max and min and it worked, but I was also playing around so can’t 100% it was that. See settings here. Recommend you try copy a known config like this one for testing. ESC Flycolor X Cross HV3 settings on BlHeli 32 - #52 by kkolli Once you set them within the right ballpark values, then you can do a throttle calibration.