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This copy of the macOS Catalina installer application is too old to be opened on this version of macOS

I wan't to downgrade my OS from Big Sur developer beta to Catalina, so i download Mac OS Catalina on the app store but it didn't work

MacBook Pro 15″, macOS 10.16

Posted on Jul 19, 2020 3:56 PM

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Question marked as Top-ranking reply

Posted on Jul 19, 2020 5:32 PM

Please refer to Restore shipping software.

2 replies

This copy of the macOS Catalina installer application is too old to be opened on this version of macOS

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