what is the correct way to position the mini 2 for imu calibration.  pic 1 or 2?  Thanks .

*Photos taken from another post

I usually keep it in the position of pic 1

FabioV Posted at 6-14 06:06
I usually keep it in the position of pic 1

Muchas gracias

https://youtu.be/0tQvxvdBIV8 Mini 2 calibrate IMU video

Hi there. Thank you for reaching out. Kindly use the first image and please make sure that the aircraft needs to be placed on a level surface and ensure that the operation is correct. You may follow the onscreen instructions when you perform the IMU calibration. Thank you for your valued support.

There's almost never any need to recalibrate the IMU.
Leave it alone.