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may I "revert" to Catalina even if the Big Sur is installed from factory?

I received an iMac with big sur but as I use Lightroom, I tested and so many problems that I need to use Catalina instead of big sur. Question may I "revert" to Catalina even if the Big Sur is installed from factory?

iMac 27″, macOS 11.0

Posted on Nov 25, 2020 12:36 AM

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Posted on Nov 25, 2020 12:39 AM

No. You can't run a version of macOS earlier than what it shipped with.

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may I "revert" to Catalina even if the Big Sur is installed from factory?

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