DJI RS 3 Mini All Axis Balanced, Gimbal is Unreliable and Unusable, ERROR CODE 1009

I have my RS 3 Mini for less than 2 months and I haven&been using it much. Recently I find my gimbal jerks/shakes especially when I tilt it forward, and also when I move the angles with joystick it also jerks and shakes. First of all, YES, I&balanced all axes well. This is not an operator-caused issue, and I’ve completed Auto Tune. Secondly, I am running the latest firmware on the gimbal: Gimbal: 01.02.00.00 GCU: 00.04 IMU: 00.01 Bluetooth: 01.00 I have reset everything both on the gimbal screen and in the Ronin app, I have tried to connect to the RS3 mini with a second phone (iOS and Android latest .apk from DJI). I&tried Restore Gimbal Parameters, Horizontal Calibration (sometime the process failed), System Calibration. Balance test sometime shows excellent result, and sometime show re-balance required although I re-test it without moving any thing on all axes. Gimbal Auto Check detected Error Code 1009.