imu error

  1. Trex.Drone

    P3 adv IMU Calibration unknown error at 2%

    Hey Guys my phantom 3 advanced has updated firmware. 1.11.20 but it says imu calibration require, whenever i try to calibrate. calibration halts at 2%. with a message unknonw error. please help. i flew this drone only once. n it was in cupboard for 8 months. please help.