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Apple Computing Products:
macOS - Operating System
Mac Pro 4,1 (2009) to Mac Pro 5,1 firmware upgrade
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<blockquote data-quote="harryb2448" data-source="post: 1768397" data-attributes="member: 42497"><p>Michael be aware that link from Nick is not for your machine. It is an update for 2010 Mac Pros only EFI Update 1.5, and is not the hack you are looking for to go from Mac Pro 4.1 to 5.1.</p><p></p><p>I doubt if it will even download on your 2009 Mac Pro.</p></blockquote><p></p>
[QUOTE="harryb2448, post: 1768397, member: 42497"] Michael be aware that link from Nick is not for your machine. It is an update for 2010 Mac Pros only EFI Update 1.5, and is not the hack you are looking for to go from Mac Pro 4.1 to 5.1. I doubt if it will even download on your 2009 Mac Pro. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Mac Pro 4,1 (2009) to Mac Pro 5,1 firmware upgrade
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