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Downgrade macOS Monterey
Downgrade macOS Monterey

Reverting macOS Monterey to Catalina or Big Sur.

Updated over a week ago

At this time PhoneCheck doesn't support macOS Monterey and you may encounter an error when trying to launch PhoneCheck on macOS Monterey. We recommend macOS Catalina or Big Sur.

Download Big Sur - App Store

Download Big Sur through the Terminal:

Input :

softwareupdate --fetch-full-installer --full-installer-version 11.6.1

or the following for a list of installers

softwareupdate --list-full-installers

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