At the beginning of the week, we wrote that some MacBook, MacBook Pro, Mac mini and iMac users have encountered an issue when trying to install macOS Monterey 12.0.1 on their computers… After the upgrade, computers stopped booting and turning on. According to the source now, Apple solved the problem, and it was in the firmware of the T2 security chip.
This is an excerpt from Apple’s official statement:
We have identified and fixed an issue with the Apple T2 Security Chip firmware that was preventing a very small number of users from booting their Mac after a macOS update. The updated firmware is now included with existing macOS updates. Users affected by this issue can contact Apple Support for help.