Apple Fixes Bug That Bricked Some Intel Macs After macOS Monterey Install
Apple has fixed an issue that could cause some Intel Macs with a T2 chip to fail to boot up after macOS Monterey was installed, Apple said in a statement. There was a problem with the firmware on the Apple T2 security chip that prevented some users from being able start their Macs after updating to the macOS Monterey software.
Apple says that a BridgeOS firmware update is now included with the existing macOS updates to prevent further failures, and users already impacted by the issue should contact Apple Support for assistance with their machines.
Following the launch of macOS Monterey, there were
multiple reports from users who found their Macs bricked after updating. Affected users were unable to turn their Macs on, an issue that affected models with a T2 security chip that powers things like
Touch ID. Macs with M-series chips were not affected as they do not have a separate T2 chip. Macs with a T2 chip were manufactured between 2017 and 2020, with a list available below.
- iMac (Retina 5K, 27-inch, 2020)
- iMac Pro
- Mac Pro (2019)
- Mac Pro (Rack, 2019)
- Mac mini (2018)
- MacBook Air (Retina, 13-inch, 2020)
- MacBook Air (Retina, 13-inch, 2019)
- MacBook Air (Retina, 13-inch, 2018)
- MacBook Pro (13-inch, 2020, Two Thunderbolt 3 ports)
- MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports)
- MacBook Pro (16-inch, 2019)
- MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports)
- MacBook Pro (15-inch, 2019)
- MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports)
- MacBook Pro (15-inch, 2018)
- MacBook Pro (13-inch, 2018, Four Thunderbolt 3 ports)
Intel Mac users will no longer run into this issue now that new firmware has been released to address the problem, but those who already have a dead Mac will need help from Apple to get their devices up and running again.
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Top Rated Comments
Apple's quality has become atrocious.
How the heck do they not catch that Intel based computers fail to boot after installing this update?
There was a 6 month long public beta for Monterey - how was this not caught during that?
And then when it's discovered, the OS was released 11 days ago. Apple was just too busy making other broken software to bother fixing the fact that a lot of Macs couldn't boot for nearly two weeks?
You are affected by this issue if your T2 Intel Mac (2018-2020) is booting up to a black screen after installing the Monterey 12.0.1, Big Sur 11.6.1 or Catalina 2021-007 Security Update.
You will need a 2nd Mac for the fix and will be restoring the BridgeOS firmware. Once connected, you will perform a REVIVE. This will fix the issue + retain all OS and User data.
The Apple Store can do this for you but BE SURE to say you need a REVIVE and not a restore. If they click the restore option all your data will be ERASED.
https://mrmacintosh.com/how-to-restore-bridgeos-on-a-t2-mac-how-to-put-a-mac-into-dfu-mode/