Just upgraded the FW on my P3Pro. Want to check IMU and calibrate IMU if need be...but they are "greyed out" on the sensor panel. When touching "Gimbal Auto Calibration" nothing happens (I had no problem doing either prior to FW upgrade). Likewise, when attempting RC stick calibration the same thing happens: I touch "Calibrate," it goes to "Start," and ... nothing (Just the warning "allow all transmitter sticks..." notification pops up). There are no alarms, the red light on the RC is solid, but...nothing... My P3 has app vers 2.2.0; RC & aircraft vers 1.5.70 and I'm using a newer iPad. Any insight/ suggestions as to what's happening? Thanks!