Note that the window will show the macOS version. Select the backup that you want to revert to.In the Recovery window, find “Restore From Time Machine Backup.” Image: Apple Within the macOS Recovery window, select the drive, then find “Restore From Time Machine Backup.”.Click the gear icon, then click “Continue.” If your Mac is equipped with Apple silicon, power down your Mac, then press and hold the power button until you see the “Startup Options” window.You should then see the macOS Recovery window. If you have an Intel-based Mac, restart your Mac and hold both the Command and R keys through the startup chime until the Apple logo shows.Connect the external hard drive that you used for Time Machine backups to your system.Make sure you back up any files that you created while working with the beta (unless, of course, you don’t care whether you lose them).If you made a Time Machine backup just before you installed the beta, then reverting to your previous stable OS is relatively simple. Restore to a previous Time Machine backup Select “Restore Defaults” to unenroll your Mac from the beta.

Select “Details.” in the bottom-left corner of the window, underneath the message “This Mac is enrolled in the Apple Beta Software Program.”.

Go to “System Preferences” > “Software Update.”.If you aren’t in a rush to go back your previous OS, you can simply unenroll your Mac from the beta program and wait for the next stable update, which will revert you to that OS: If you’re not sure which you have, click on the Apple logo in your system’s upper left corner, and choose “About This Mac.” In the Overview, you’ll be able to see which processor you have.

Note: some of these steps may differ, depending on whether your Mac has an Intel processor or Apple silicon, like the M1 processor. Whichever path you chose, we’ll walk you through how to find your way back to a more reliable OS. Apple launches public beta of macOS Monterey, bringing updates to FaceTime and Safari

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