UPDATED!!! You can Install macOS Monterey on Unsupported Macs from 2008-2015! I'll show you step-by-step how to use OpenCore Legacy Patcher to install macOS Monterey on your old Mac! CHAPTERS & UPDATES BELOW.

OCLP UPDATES 2/15/24:
#1 The current version of Monterey is 12.7.3
#2 The current version of OpenCore Legacy Patcher = 1.3.0
#3 If you have a MacBookPro11,3 15" Late 2013 or 2014 and are stuck at the Apple logo progress bar after install or a Monterey update = boot it with safe mode (hold down shift on boot) then apply the post volume patches. Reboot and you can then install OCLP to your internal hard drive. - https://github.com/dortania/OpenCore-...

Chapters
0:00 Welcome & Intro
0:32 Updates & Chapters in comments section!
0:55 Important Notes before we start the install process.
3:20 Official OCLP Installation Guide
3:42 Equipment Needed & Hardware Recommendations
4:45 Start of the walkthrough - Mid 2010 Mac mini
5:10 Download OCLP GUI Application from GitHub
6:10 Opening OCLP App for the first time
6:30 Plug in, Erase & Prepare USB Flash Drive
8:02 Download macOS Monterey & Create USB Installer
9:18 Download complete! Creating Monterey USB installer
10:22 USB Installer complete! Now Install OCLP to USB.
11:56 USB Drive Done! Let’s reboot - Hold Down OPTION key
12:29 Option key booting with EFI Boot to Monterey Recovery
12:52 Pick an option - Option #1 Upgrade or Option #2 Erase & Install
13:22 Option #1 Upgrade Install (retain files & apps)
14:03 Option #2 Erase HD & Fresh Install of Monterey
15:55 The install of macOS Monterey has started!
16:26 Automatic 2nd Reboot after install
16:37 Automatic 3rd Reboot after configuration
16:58 Final Reboot & Install of New OCLP Auto Patcher!
17:52 Install Complete! Now at the Setup Assistant Window.
18:35 We are now on the macOS Monterey Desktop.
18:58 New auto popup to install OCLP to internal Hard Drive!
20:03 Installing OCLP Bootloader to Internal Hard Drive
21:39 Reboot - Hold down Option key & select EFI Boot
22:46 Opening OpenCore Legacy Patcher app
23:01 Turning off Show Boot Picker for seamless boot (optional)
24:07 Flashing Menu Bar problem fixed with Beta Blur!
25:01 Turn On Dark Menu Bar if you have a light background.
25:32 Metal vs Non Metal Graphics Cards + Patches ?
26:08 Does my Mac need Post Install Root Patches? - How to Check
27:43 How to install macOS Monterey Updates
28:07 OCLP automatic Root Patch System after Monterey Update
29:07 Troubleshooting OpenCore Legacy Patcher Issues
29:59 A big thank you to Mykola & all OCLP Developers!
30:20 Thank you! Let me know if you have any questions.

I want to thank both Mykola Grymalyuk (khronokernel) & Dhinak G (dhinakg) for your work on OpenCore Legacy Patcher + all of the contributing developers that help maintain the patcher! OCLP will bring new life to thousands of Macs saving them from the recycler!

OpenCore Legacy Patcher app download
https://github.com/dortania/OpenCore-...

Direct Download Link macOS Monterey Full installer InstallAssistant.pkg . - https://mrmacintosh.com/macos-12-mont...

SUPPORTED MAC MODELS LIST
https://dortania.github.io/OpenCore-L...

Troubleshooting OpenCore Legacy Patcher
https://dortania.github.io/OpenCore-L...

Troubleshooting Acceleration Issues
https://dortania.github.io/OpenCore-L...

Having a issue? - OpenCore Legacy Support Discord Server
  / discord  

OpenCore Legacy patcher submit an issue
https://github.com/dortania/OpenCore-...

MacRumors Thread
https://forums.macrumors.com/threads/...

Support OpenCore Legacy Patcher
https://dortania.github.io/OpenCore-L...

Support Mr. Macintosh
  / mrmacintosh  
http://paypal.me/mrmacintoshblog

DISCLAIMER: Please understand that installing macOS Monterey on your unsupported Mac is a best effort by the community. A ton of work went into getting the patcher to work! Some things might not work exactly right but it's really really close. I would not recommend installing on a system that you rely on for work or school. ALWAYS BACKUP YOUR FILES FIRST BEFORE YOU UPGRADE! The good news is that you are getting the latest security fixes from Apple. Some might argue that upgrading to Patched Monterey makes your Mac safer since Apple is no longer fixing security issues on 10.14 and below.

macos monterey old mac

Install UEFI Windows 10 Bootcamp
   • Install Windows 10 UEFI & Dual Boot O...  

Subscribe to "The Apple Ninja"
   / @appleninja