How to install latest macOS on Unsupported Macs

2013-2017 Macs can easily run the latest macOS with OpenCore

2008-2020 Macs can easily run a secure OS with chromeOS Flex

SSD Upgradeable Macs:

2012-2015 13″ & 15″ models
2016-2017 13″ w/o Touch Bar
For more details on compatibility visit Laptops
Want to Upgrade? Submit a ticket

Stage Ⅰ: Prepare Installer

  1. Plug in a 16GB or larger USB 3.0 thumb drive with nothing important saved on it as it will be erased.

  2. Download the latest from

  3. Once downloaded, launch the app and you will be greeted by this menu:
  4. First, we’ll want to select the “Create macOS Installer” button. This will present you with 2 options:
  5. Choose Download macOS Installer. Selecting this option will download Apple’s Installer Catalogs and build a list for you to choose from, choose the latest version which may differ from below:

    This will download and install the macOS installer to your applications folder.

  6. Once finished, you can proceed to write the installer onto the USB drive.
    • Note: The entire USB drive will be formatted

  7. Select the Downloaded Version of macOS

  8. Now the patcher will start the installer flashing:
  9. Success Prompt:
  10. Finished Flashing:
  11. Return to Main Menu

Stage Ⅱ: Build OpenCore

  1. Now that we have a macOS installer, let’s now build our OpenCore configuration.

  2. Select Build and Install OpenCore and start building:

  3. Finished Building:
  4. Select the Install to Disk button, then select a drive:
  5. Select Partition:

Stage Ⅲ: Boot & Install

  1. Reboot the machine while holding Option

  2. Select the EFI Boot entry with the OpenCore icon (holding the Control key will make this the default boot entry):

  3. Now that you’ve loaded OpenCore, select Install macOS:

  4. You will soon reach the installer screen. From there, it’s just like any normal macOS install.
    • If you want to keep your data and settings, just install macOS.
    • If you want the system to be wiped, erase the drive in Disk Utility then proceed with installing macOS.

Stage IV: Post-Installation

  1. OCLP will now automatically prompt you to root patch your system:
    • You will also be prompted to install these patches after macOS updates.
    • Whenever you see this prompt, you must apply the patches then reboot as prompted.
    • I recommend to also update the OCLP patcher app after any macOS update, please follow my guide How to Reinstall Root Patches on Unsupported Macs
  2. Launch Finder > Applications then launch OpenCore Legacy Patcher
  3. Choose Settings
  4. Uncheck setting circled in red:
  5. Build OpenCore again just like in Stage 2 except this time choose the internal drive, NOT the USB.

  6. Now you no longer need the USB drive.

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