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macrumors newbie
Original poster
Apr 20, 2013
*Admin - Please move this posting if need be. Thank you.

Hello everyone,
I am a bit stumped and need some help, as I'm tying to update the firmware on my 2009 Mac Pro so that it thinks it's a 2010 model. Effectively turning the Mac Pro 4 into a Mac Pro 5 (In essence). I have downloaded the MacProEFIUpdate.dmg and the Mac Pro 2009-2010 Firmware Tool to complete this operation. However, when my computer goes to reboot I get the white screen showing that the update is taking place, but when I check the System Profiler, it still lists the computer as a Mac Pro 4. After doing more research on the internet, someone suggested that the ACPI_SMC_PlatformPlugin also needs to be updated (To version 4.5 - I think). Currently mine is Ver 1.0.0. I have looked around a bit, but I haven't been able to find a solution/tool/update etc. to enable me to update the PlatformPlugin, please help.

Thanks ThinkTank,

Screen Shot 2016-02-26 at 2.41.39 AM.png

[doublepost=1460086466][/doublepost]*By the way, my graphics card is supported and Apple are no longer supporting the ACPI_SMC_PlatormPlugin version 4.5.0 - I checked and it doesn't appear to be there. I have also read someone tying to use the Update tool using 10.6 Snow Leopard, can anyone confirm or deny this please. Thanks again.
Last edited:


macrumors 68040
Dec 7, 2009
Read relevant thread on netkas forum. All answers are there.
Digging in kexts will lead you nowhere.


macrumors member
May 8, 2014
to make a 4.1 to 5.1 you have to change 4cores to 6 cores or 8cores to 12cores , compatibles intel xeons
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