According to MacRumors reports, Apple said in a statement that it has fixed some previous problems reported by users that Macs with older Intel chips could not boot after upgrading macOS Monterey. Apple said that the current macOS update includes a BridgeOS firmware update to prevent further malfunctions. Users who have been affected by the problem can contact Apple's support department for help.
After the launch of macOS Monterey, multiple users reported that they found that their Mac had problems after the update. Affected users cannot turn on their Macs. This issue affects Intel models with T2 security chips. Macs with M-series chips are not affected because they do not have a separate T2 chip.
The following models were produced between 2017 and 2020 and may have this problem:
- 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)
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