MP All Models MP51.0084.b00 & Snow Leopard

Trogwold

macrumors newbie
Original poster
Jul 8, 2019
2
0
According to my Googling, the 2010 3.33MHz 6 core Mac Pro is the beefiest machine that can run Snow Leopard.

All of the ones I'm seeing on FleaBay have been upgraded to High Sierra, which is of itself no problem as I'm intending to just swap drives.

They're all running the MP51.0084.b00 ROM though. Is this the stock one that the Westmere was born with? If not, will it still boot 10.6.8? If not, can the ROM be downgraded and, if so, what to, how and where from?

Many thanks!
 

h9826790

macrumors G5
Apr 3, 2014
12,777
5,587
Hong Kong
According to my Googling, the 2010 3.33MHz 6 core Mac Pro is the beefiest machine that can run Snow Leopard.

All of the ones I'm seeing on FleaBay have been upgraded to High Sierra, which is of itself no problem as I'm intending to just swap drives.

They're all running the MP51.0084.b00 ROM though. Is this the stock one that the Westmere was born with? If not, will it still boot 10.6.8? If not, can the ROM be downgraded and, if so, what to, how and where from?

Many thanks!
You should upgrade (to 144.0.0.0.0), but not downgrade the ROM.

e.g. the new ROM corrected the PCIe card link speed bug. And have microcode update for better security.

Also, newer ROM won't stop you to boot older OS. There is a reason. All cMP shipped with a set of recovery disc, Apple cannot give you a firmware that which can't boot the recovery disc (original OS) without any warning.
 

Trogwold

macrumors newbie
Original poster
Jul 8, 2019
2
0
Thanks for the reply.

I've never had to mess with the ROM before so bear with me!

144.0.0.0.0 is presumably a later ROM in the new numbering system I've read about? I'm sure I'll find instructions if I search around but if you could point me in the right direction I'd be very grateful.

And that's great news about compatibility with my favourite OS! :)
 

tsialex

macrumors 603
Jun 13, 2016
5,320
6,030
Brazil
Thanks for the reply.

I've never had to mess with the ROM before so bear with me!

144.0.0.0.0 is presumably a later ROM in the new numbering system I've read about? I'm sure I'll find instructions if I search around but if you could point me in the right direction I'd be very grateful.

And that's great news about compatibility with my favourite OS! :)
144.0.0.0.0 is the current firmware for a MP5,1. Most of the first post of the MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions) applies to you, read it.
 
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fhturner

macrumors 6502
Nov 7, 2007
491
312
Birmingham, AL & Atlanta, GA
the 2010 3.33MHz 6 core Mac Pro is the beefiest machine that can run Snow Leopard.
Not exactly. Maybe you mean clock speed for stock shipping configs. But an upgraded 12-core, dual-CPU machine with the next step up frequency-wise— 3.46GHz— would be the “beefiest” and would run SL just like the model you cite. Just depends on what you’re doing as to whether you’d gain from that extra power.
 
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