Yep, I had the exact same issue : I disabled ProMotion on my M1 pro (MBP 16 inches, 2021 model), I updated from 12.7 to 12.7.1 and voila : my MBP is bricked.
I've got an apointment today with an Apple Store tech. I hope they will revive it without restoring it (I did not save the last month of work - pretty dumb I know).
Did you manage to revive it ?
Pierre_C
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