How to downgrade from Monterey 12.3 to 12.2

Monterey 12.3 has doubled my render times using Redshift. I have a time machine backup of 12.2 but if I try to restore it it wants me to reinstall the OS and then transfer data from Time Machine.


If I reinstall the OS won't it just install a clean copy of 12.3 which I don't want?


MacPro 7,1

Mac Pro

Posted on Mar 15, 2022 12:38 PM

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Posted on Mar 15, 2022 1:31 PM

  1. Backup your data.
  2. Open the Terminal app and enter the following command
  3. softwareupdate --fetch-full-installer --full-installer-version 12.2
  4. Create a bootable USB installer using these instructions.

Apple’s instructions

How to create a bootable installer for macOS

5 Boot from the iUSB installer and install 12.2.

6 Migrate you date from your backup.


If you want 12.2.1 use 12.2.1 vice 12.2 in the Terminal command.

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25 replies

Jun 1, 2022 5:35 PM in response to brandtgssman

It is NOT possible. I had the same issue with Avid earlier and had to wait until they got compatible with 12.3 because I couldn't downgrade to an OS that was previous to what my M1 Mac laptop shipped with. Spent hours over many days on tech support with Apple to no avail. Once Avid gets 12.4 compatible, TURN THE AUTOMATIC UPGRADES OFF!!! I'm too old to learn Premier... So now Apple OS bugs me every day to update my 12.3 OS to 12.4.

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How to downgrade from Monterey 12.3 to 12.2

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