Failed to update macOS 12.3

MacBook Pro 14 2021, I upgraded the macOS 12.3 that was just released this morning. After clicking Restart Now, the progress bar started to read. It restarted with a black screen in less than half (normally it should show how many minutes are left), and then flashed twice in white. Apple logo, and then restarted to enter the update progress bar (for more than ten minutes). After entering the system, I found that the macOS 12.2.1 version before installation was returned, and an error pop-up window was reported: Unexpected restart. The error report has only one line of code:


SOCD report detected: (iBoot panic)


There was also a problem with the installation when the beta version was released before. I tried three times, the first update failed and I returned to macOS 12.1. The second update failed, and the white Apple logo flashed repeatedly at startup. The third update failed. Black screen.


I have tried booting in safe mode, creating a new administrator, and downloading the full macOS installation package, but none of them work.


Anybody has the same problem? How can I troubleshoot the problem?

MacBook Pro (2020 and later)

Posted on Mar 15, 2022 1:56 AM

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Posted on May 22, 2022 8:40 AM

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64 replies

Mar 15, 2022 7:05 AM in response to fyime

Hello @fyime.


I've got this issue too. Has your Mac ever had a logic board replaced? I have a suspicion that's the fault here. It's causing the iBoot firmware to fail. It's literally impossible to get 12.3's iBoot Firmware running on Macs with this fault. :(


You can recover with a second Mac and configurator back down to 12.2.1 to at least get back up and running until Apple can fix the firmware.

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Failed to update macOS 12.3

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