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.

macOS Monterey on MBP Feature
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.

Related Forum: macOS Monterey

Top Rated Comments

KaliYoni Avatar
18 months ago
This is a bug that never should have made it past QA testing. I think the frequent problems with macOS, iOS, iPadOS, and tvOS releases and updates are symptoms of how Apple's culture (secrecy, compartmentalization, non-collaborative across company enforced silos) hurts us, Apple USERS. An OS is a lot different from a social media app; the Keep Shipping mentality can do a lot of damage to somebody who completely loses the ability to use their machines.
Score: 53 Votes (Like | Disagree)
mikeb13 Avatar
18 months ago
How are they going to get the update if they can’t boot their Mac?
Score: 40 Votes (Like | Disagree)
ArtOfWarfare Avatar
18 months ago
This is why I don't update my Apple devices on day one anymore.

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?
Score: 36 Votes (Like | Disagree)
MrMacintoshBlog Avatar
18 months ago

They can't, or at least Apple hasn't released instructions on how it can be done. Fix will prevent more Macs from having this problem, but those who already have a bricked Mac will need to get it fixed by Apple.
I've released instructions for anyone who is having this issue. ?

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/
Score: 36 Votes (Like | Disagree)
antiprotest Avatar
18 months ago

is this really a "bug"?

or is it Apple's polite way of reminding people to upgrade to a Mac with M1 chip?
(a.k.a. time to contribute more money to the "Tim Cook & Apple Executives New 225-foot Yachts Fund")
They have been incompetent enough in recent years for me to believe that this was indeed an unintentional bug.
Score: 16 Votes (Like | Disagree)
w5jck Avatar
18 months ago

I actually appreciate Apple is being more transparent to push obsolescence on the intel macs.

Your pc wouldn’t have been bricked if it were an iMac M1 chip :)
Not everyone can go out and plop down thousands of dollars to replace their Intel Macs. It takes time to replace those Macs. I can't write out the rest of my response to you as it would certainly get deleted by the mods...
Score: 13 Votes (Like | Disagree)

Popular Stories

iPhone 15 Pro Buttons CAD Leak

iPhone 15 Pro Leak Reveals Unified Volume Button and Mute Button

Monday March 20, 2023 8:33 am PDT by
As previously rumored, the next-generation iPhone 15 Pro and iPhone 15 Pro Max will feature a unified volume button and a mute button, according to leaked CAD images shared in a video on the Chinese version of TikTok and posted to Twitter by ShrimpApplePro. Instead of separate buttons for volume up and volume down, the iPhone 15 Pro models are expected to have a single elongated button for...
iOS 16

iOS 16.4 for iPhone Nearing Launch With These 5 New Features

Monday March 20, 2023 11:50 am PDT by
Apple says iOS 16.4 is coming in the spring, which began this week. In his Sunday newsletter, Bloomberg's Mark Gurman said the update should be released "in the next three weeks or so," meaning a public release is likely in late March or early April. iOS 16.4 remains in beta testing and introduces a handful of new features and changes for the iPhone. Below, we have recapped five new features ...
original iphone auction

Factory-Sealed Original iPhone Sells for $55,000 at Auction

Friday March 17, 2023 1:08 pm PDT by
A first-generation iPhone still sealed inside its box sold for $54,904 at auction, which is more than $54,000 over the original $599 price tag of the device when it was released in 2007. The original iPhone was put up for sale by RR Auction on behalf of a former Apple employee who purchased it back when it first came out. Back in February, an original, sealed iPhone sold for over $63,000,...
voice isolation

iOS 16.4 Adds Voice Isolation for Cellular Phone Calls

Tuesday March 21, 2023 11:01 am PDT by
The iOS 16.4 update that is set to be released to the public in the near future includes voice isolation for cellular calls, according to notes that Apple shared today. Apple says that Voice Isolation will prioritize your voice and block out the ambient noise around you, making for clearer phone calls where you can better hear the person you're chatting with and vice versa. Voice...
iPhone 12 Pro vs iPhone 15 Pro Feature

iPhone 12 Pro vs. 15 Pro: New Features to Expect if You've Waited to Upgrade

Friday March 17, 2023 10:29 am PDT by
While year-over-year iPhone upgrades are not always groundbreaking, new features can begin to stack up over multiple generations. For example, the iPhone 15 Pro will be a notable upgrade for those who still have a three-year-old iPhone 12 Pro. If you are still using an iPhone 12 Pro and are considering upgrading to the iPhone 15 Pro when it launches later this year, we have put together a...
top stories 18mar2023

Top Stories: iPhone 15 Pro Pricing, New iOS 16.4 Beta, Siri vs. ChatGPT, and More

Saturday March 18, 2023 6:00 am PDT by
Apple's high-end iPhone models have started at $999 in the U.S. since they first launched back in 2017 with the iPhone X, but could this finally be the year that starting price sees an increase? This week also saw some more rumors about Apple's upcoming headset and the company's explorations in the booming AI industry as well as the release of a new round of beta updates, so read on for all...
smart monitor m8 samsung

Deals: Samsung's iMac-Like Smart Monitor M8 Drops to Lowest Price of Year So Far With $250 Discount

Monday March 20, 2023 8:27 am PDT by
Samsung today kicked off a special "Discover Samsung" event, which will be a week-long savings event focusing on Samsung monitors, smartphones, TVs, appliances, and more. While some deals will stick around the entire week (through March 26), others will refresh every day. Note: MacRumors is an affiliate partner with Samsung. When you click a link and make a purchase, we may receive a small...