After adding a new skill, I commented out MAIN_SKETCH and uploaded it again.
Reset joint offsets? (Y/n): pressed y and clicked Calibrate the IMU? (Y/n): I pressed n and then uncommented MAIN_SKETCH again and uploaded it.
After that, I pressed c to correct it, but as shown in the video, if I pressed s to save it and then pressed c again, a different posture appeared.
Also, if you try to calibrate again from the posture shown when you press c, it will return to the corrected posture.
It is not saved again after that
The video cannot be uploaded because it is too large. Please send me your email address and I will send it to you.

Help me
Please send the video to support@petoi.com, thanks a lot.
To calibrate the joints, you can refer to the instructions:
there are 3 ways to do joint calibration, We highly recommend using the first two:
Use the Mobile App Petoi
Use Petoi Desktop App
Use Arduino IDE