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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
Please refer to Restore shipping software.
Please refer to Restore shipping software.
You need to erase your drive and restore the Time Machine backup you made before installing Big Sur.
This copy of the macOS Catalina installer application is too old to be opened on this version of macOS
