I think I have experienced similar calibration grayed out calibration as well yesterday April 8, Sunday.
I turned on both controller and the drone then controller keep saying "level error", so tried to calibrate a few time successful, but keep saying "level error", and then back to greyed out. Actually turning on and off the controller and drones a few times, then I can finally fly. I think this happened after updating to Open Solo.
Experienced shaky video after update as well. Could this be related to the speed setting? I know I bumped it from slow (10mph) to fast or very fast (33 mph).
I turned on both controller and the drone then controller keep saying "level error", so tried to calibrate a few time successful, but keep saying "level error", and then back to greyed out. Actually turning on and off the controller and drones a few times, then I can finally fly. I think this happened after updating to Open Solo.
Experienced shaky video after update as well. Could this be related to the speed setting? I know I bumped it from slow (10mph) to fast or very fast (33 mph).