Early 2015 Retina 10.9 Compatibility

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Level 1

8 points

Early 2015 Retina 10.9 Compatibility

Hello,

I am trying to downgrade a users Early 2015, 13" Retina Macbook Pro to OSX 10.9 but I am getting errors. I dont see that much information about the Mac maybe because it is too new. I tried everything from using a 10.9 usb image and the 10.9 osx file itself.

I was wondering if it was even compatible?

Posted on Apr 29, 2015 5:26 PM

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Answer 1

Apr 29, 2015 5:30 PM in response to blazex4

An Early 2015 MacBook Pro shipped with Yosemite, Mac OS X 10.10. You cannot downgrade the version of Mac OS X below that which was preinstalled on a Mac, the firmware will not permit the machine to boot an earlier version.

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Answer 2

Eric Root

Level 10

684,039 points

Apr 30, 2015 9:24 AM in response to blazex4

Install OSX Restrictions

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