does anyone know what a strange noise the aircraft makes the call is two strange beeps with 2-minute intervals. And the app informs the imu is out of calibration.

You just answered your own question? Calibrate the IMU.
There are guides here on the forum and on youtube.

when I try to calibrate give error. But what the beeps?

What firmware version are you using in your aircraft?

DJI-Tim Posted at 2016-2-6 01:12
What firmware version are you using in your aircraft?

1.02.10 phantom 3 k4