How to install macOS Sierra 10.12 on an Unsupported Mac
New video here for the final release: https://www.youtube.com/watch?v=eQz5OQHOTAA
This is how to install macOS Sierra 10.12 Developer Preview on an Unsupported Mac. This process is made very easy by a tool that I’ve recently finished writing, and is what is shown in this video. Written instructions and a link to the tool can be found here: http://dosdude1.com/sierrapatch.html
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macintosh installer