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How can you downgrade from mac os high sierra to mac os sierra

Hi to whoever reads this


I have got a MacBook air 2015 model that has got mac os high sierra beta on it.

Now I got final cut pro lately and it wouldn't let me run it because I was on mac os high sierra beta version.

My question is:

How do I downgrade to mac os sierra easily and without losing any of my files.


Thanks,

Phil Grimley

Australia🙂

MacBook Air, macOS Sierra (10.12.4)

Posted on Aug 31, 2017 8:37 PM

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Question marked as Best reply

Posted on Sep 1, 2017 5:34 AM

"Downgrading" a Mac OS is the same regardless of its beta status.

Short version: Erase and repartition the drive then reinstall from the backup you made prior to installing the newer OS.

Longer version: macOS Sierra: Revert to a previous macOS version

7 replies

How can you downgrade from mac os high sierra to mac os sierra

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