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xav8tor
Jul 19, 2012, 03:32 PM
I know the OS and firmware are, in theory, independent, but has anyone actually installed/used Mountain Lion on a 4.1 Mac Pro with the 5.1 firmware? If so, any issues? Thanks!



milaszewski
Jul 31, 2012, 04:33 AM
I know the OS and firmware are, in theory, independent, but has anyone actually installed/used Mountain Lion on a 4.1 Mac Pro with the 5.1 firmware? If so, any issues? Thanks!


I have successfuly upgraded my Mac Pro 2009 quad 2.66 4,1 to 5,1 firmware. I replaced the CPU with a six core 3.33 Intel Xeon W3680. I did that yesterday, on Mountain Lion with no trouble at all.

xav8tor
Aug 2, 2012, 08:07 AM
I have successfuly upgraded my Mac Pro 2009 quad 2.66 4,1 to 5,1 firmware. I replaced the CPU with a six core 3.33 Intel Xeon W3680. I did that yesterday, on Mountain Lion with no trouble at all.

Thanks for the reply. That is good news. I'll soon attempt it myself.