Anybody seeing OS updates for Catalina breaking devices to the point that they won't power on?

[nsbickhart]

Revive through configuration fixes the issue, but I've had 3 Macs this week that just blacked out completely out and won't power on.

[nsbickhart]

https://twitter.com/ClassicII_MrMac/status/1455387967028142085

Think I found it 😞

[demaioj]

Looks like it's been publicly posted but our situation was all related to T2 Macs. For us we were able to do a DFU restore and all the data was intact. Didn't help that most users are remote.

https://support.apple.com/guide/apple-configurator-2/revive-or-restore-an-intel-based-mac-apdebea5be...

[mm2270]

Yikesers! I'm glad I came across this. I just recently started testing 11.6.1, but haven't seen this yet. I will need to keep a close eye on it. And I need to make sure our 11.6 users don't try to install this. Some of them are remote, like all the way in India kind of remote.

[Jason33]

Yep, we had several machines get bricked from the 2021-007 security update.  Revive via Apple Configurator 2 has resolved it.  I believe Apple is also patching/updating the firmware for the T2 Mac's to be included in the update.

[swapple]

AC2 and Revive will wake it up.  Video of the process here:  https://mrmacintosh.com/how-to-restore-bridgeos-on-a-t2-mac-how-to-put-a-mac-into-dfu-mode/