This is being discussed in the user forums also https://discussions.apple.com/thread/253743699?login=true&page=2
Macrumors and 9to5Mac have picked this up.
https://www.macrumors.com/2022/03/17/macos-monterey-bricking-macs-logic-boards/
https://9to5mac.com/2022/03/17/repaired-m1-macs-being-bricked/
I share those only to hopefully encourage Apple to address this issue. I spent several hours with a Genius at the Genius Bar yesterday to get back to a working 12.2.1. Hopefully we'll see a 12.3.1 with a fix shortly.
rpetty
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