I am not a beginner, I've been flying drones for 4 years, bought my P3A last year. I recently updated my P3A firmware to 1.11.20. Took about 15 minutes. I powered the drone down after it finished. Then I updated the Remote. Powered the drone up and it sounds like the gyro is making funny squealing sounds, and the gimbal is double beeping. Unfortunately I did not save the text file. I calibrated the IMU, but still have a squealing gyro half the time I turn it on. The squealing eventually goes away. Even so I flew it close and about a foot off the ground. Seems stable, but something isn't right. I do have DJI carre.

The gyro does not have any moving parts to squeal - its an internal cooling fan you can hear - the gimbal does a double beep when its booting up, my P3A does something very similar both perfectly normal.

Is the firmware update successful? Please check the current firmware version by launching DJI GO>General Settings>About.