![macOS 12 Monterey has made some older Apple iMac, MacBook Air and MacBook Pro machines unusable - NotebookCheck.net News macOS 12 Monterey has made some older Apple iMac, MacBook Air and MacBook Pro machines unusable - NotebookCheck.net News](https://www.notebookcheck.net/fileadmin/Notebooks/News/_nc3/photo_1517336714731_489689fd1ca8.jpeg)
macOS 12 Monterey has made some older Apple iMac, MacBook Air and MacBook Pro machines unusable - NotebookCheck.net News
![Macbook Pro (15-inch, mid 2012) MD546LL/A Specs Apple [Core i7 2.7 GHz, 9.1, A1286 (EMC 2556)] | Techable Macbook Pro (15-inch, mid 2012) MD546LL/A Specs Apple [Core i7 2.7 GHz, 9.1, A1286 (EMC 2556)] | Techable](https://techable.com/apple/wp-content/uploads/2018/02/Apple-MacBook-Pro-15-2012-Specs.jpg)
Macbook Pro (15-inch, mid 2012) MD546LL/A Specs Apple [Core i7 2.7 GHz, 9.1, A1286 (EMC 2556)] | Techable
![Installed Monterey on my unsupported « obsolete » 2012 MacBook Pro thanks to OpenCore, and it's working like a charm! : r/mac Installed Monterey on my unsupported « obsolete » 2012 MacBook Pro thanks to OpenCore, and it's working like a charm! : r/mac](https://external-preview.redd.it/dUbchS8mnJAKR5fTOdoXsoW9Wz29W2osFVocJP3TWs0.jpg?auto=webp&s=1907b83cb7cab9e47459f7bb0ffd4948d09f6461)
Installed Monterey on my unsupported « obsolete » 2012 MacBook Pro thanks to OpenCore, and it's working like a charm! : r/mac
![Buy Used & Refurbished Apple MacBook Pro 15.4" 2012 Retina Core i7-3820QM Quad-Core MD831LLA - MacBook Pro Buy Used & Refurbished Apple MacBook Pro 15.4" 2012 Retina Core i7-3820QM Quad-Core MD831LLA - MacBook Pro](https://techable.com/images/detailed/36/apple-macbook-pro-15.4-2012-2.7ghz-i7-retina-md831ll-a-a1398-apple-macbook-pro-15.4-2012-retina-core-i7-3820qm-quad-core-md831lla.jpg)