How to Fix a Stuck Mac (Repair)
There are numerous errors that they must correct from the beginning to the end of the installation process.
In most cases, bringing your bricked MacBook, iMac, or Mac mini to your local Apple Store’s Genius Bar is the best solution.
If you’re willing to do some troubleshooting on your own, one user on Apple Support Communities claims to have been able to resurrect a bricked Intel-based Mac by booting it up on another machine that was running the latest operating system.
The method necessitates the use of Apple Configurator 2 to update the firmware on the T2 Security Chip on a bricked Intel-based Mac.
Apple’s Genius Bar personnel will be able to perform this for you because most customers do not have a second operating computer on hand.
You should proceed with caution because if the revival procedure fails, you’ll have to restore your Mac using Apple Configurator 2, which will wipe out your internal flash storage.
Back up your Mac to an external drive using Time Machine before attempting the macOS Monterey upgrade.