Gigabyte MZ72-HB0 rev. 4.0

alex_stief

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May 31, 2016
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Recently got a workstation in with this motherboard: Gigabyte MZ72-HB0 rev. 4.0. Yes, 4.0, it is printed right on the board.
The bios seems to be old, outright missing a lot of options, and I am having trouble getting the graphics card to play nice.
So my first order of business would be updating the bios... looking at Gigabyte page for this board, the latest revision they list is 3.0: MZ72-HB0 (rev. 3.0) | Server Motherboard - GIGABYTE Germany
Anyone has an idea whether I can use the latest 3.0 bios for my rev. 4.0 board?

I hear you say "dude, just contact their support". I won't hear back from them until Tuesday, and was hoping to get things moving along quicker.
 

RolloZ170

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Apr 24, 2016
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actual BIOS of rev. 3.0 is M08_R12
which BIOS is on your rev. 4.0 currently ?
 

alex_stief

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It says "Project version: M03" in the bios information section. With a build date of 04/14/2021.

Just one example for options that are apparently missing: under "advanced" -> "legacy video select" I just get an empty screen instead of the option to prioritize between onboard and external video.
 

RolloZ170

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sounds like a confidential board for software (BIOS) engineering.
you should ask the seller, or return it and get a rev. 3.0.
 

alex_stief

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Well now that you mention it, that could be a possibility.
I contacted both the SI and Gigabyte to see what they have to say about it.

board.jpg
 
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NablaSquaredG

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At Gigabyte, different Revs sometimes only mean that they're shipped with a different BIOS version from factory but are physically identical or nearly identical
 

alex_stief

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I'll update here when I get a response from support. But for now, there is not much I can do.
There are Milan CPUs on the board, which seem to work fine. Epyc 7543.

Here is what the bios section looks like
main_small.jpg
 
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RolloZ170

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BMC FW(12.53.01) is older too, latest for 3.0 is 12.58.03
I'll update here when I get a response from support.
on the MD71 i could update the BIOS over BMC Web GUI, would be interesting if this works on MZ72 too, there is a RBU folder in the update package for that.
 

mirrormax

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Apr 10, 2020
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I have a rev1 board and asked gigabyte about this before. I suspect rev number is just about the bios it's shipped with.
Question: please clarify1) Can i use the milan bios update for rev3 on my MZ72-HB0 (rev. 1.x) board?2) Is it a dual rome/milan bios or milan only?Thanks 6/21/2021 3:04 AM
Answer:
Dear mirrormax,

It is because of the classification that rev. 1.x and rev. 3.0 BIOS are separated. It is work that flash BIOS M02_R09 from revision 3.0 website for your revision 1.x server motherboard. M02_R09 is a dual support ROME and Milan BIOS.

Regards,
GIGABYTE
 
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alex_stief

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No news about the motherboard so far.
Does anyone know if they have a technical phone support? I found one, but they only deal with consumer products. Asked for a different phone number there, but only got pointed towards their ticket system again. One might think that support for enterprise gear should be better or at least on par with consumer stuff :confused:

About the graphics card issue that prompted me to make a bios update in the first place, that was a rather easy fix. Default OpenSUSE Leap 15.3 still doesn't support AMDs RX 6600 series. Loading the backport kernel did the trick.
 

alex_stief

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Kind of an update on the revision situation...
While my support tickets with Gigabyte are still not processed, let alone answered, I got an answer from somewhere else.
An acquaintance who works at a larger institution got Gigabytes "Sr. Key Account Manager NCBU DACH" to answer an email.

Paraphrased into English it reads:
Revision changes are a common occurrence due to regular adjustments in BIOS. This particular change does not have noteworthy differences. Older BIOS revision boards are in scarce supply.
Followed by a long list of supported operating systems for whatever reason :confused:

That still doesn't answer why a rev. 4.0 board would come shipped with such an old BIOS version, since they claim the revision change is due to newer BIOS versions.
But at this point I'm like "whatever dude". I love the product, but hate everything else about Gigabyte.
Not to mention that the workstation itself is a 17000€ train wreck, but that's a story for another time.
 

oneplane

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Jul 23, 2021
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Confidential and Development assemblies often have different PCB colouring and a bunch of debug headers, connectors and testing circuits installed. If your board has all of its JTAG headers soldered on, it might be for testing, but looking at the silkscreen and solder resist colours, it looks like a normal production board.

It's likely that their whole SKU process is a mess, but if you want to be sure:

1. Read the Flash chip externally as a backup
2. Install an update
3. If it breaks something, write the flash chip back from your backup file

Technically, updates should contain a list of flash chip IDs so the capsule updater will not flash incompatible firmware on your board, but this has been flaky with most vendors.