Not able to downgrade to previous macOS
I'm trying to downgrade from Monterey to BigSur on an iMac with T2.
I've already enabled in security boot from external devices.
I've created a working bootable usb with BigSur, but,
when I try to boot from option it sees the usb disk with big sur, and let me choose it, but comes back to internet recovery in monterey.
Guess what I've missed..