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User profile for user: fletchek508
fletchek508 Author
User level: Level 1
8 points

How to perform a Mac OS Upgrade from Mojave to Big Sur

I tried to upgrade my late 2015 iMAC running Mojave to Big Sur? The App Store says "unavailable?

Posted on Jan 25, 2022 3:31 PM

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User profile for user: Barney-15E
Barney-15E
User level: Level 10
117,214 points

Posted on Jan 25, 2022 5:48 PM

Did you download the installer from here: How to get old versions of macOS - Apple Support

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How to perform a Mac OS Upgrade from Mojave to Big Sur

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