MU71-SU0 bios modding

[gsm]

Just installed the board with an 6140 for a quick test, the board came with R22 bios and its seems 100% functional. But now I need to mod the bios to add ram timings adjustments, rebar and other quality of life changes.

Is there a minimum AMIBCP version that I need to work with this board?
Talking about the rebar, is there a way to have it in the bios menu? Whats the recommend patch?
Do you guys dump the bios or just use the downloaded version from gigabyte?
After modding the bios do you "update" it using the BMC or something like fpt?

Regards

 

[RolloZ170]

But now I need to mod the bios to add ram timings adjustments,

try (right ctrl + right shift) + F2
toggles from show/hide some add. options.

Is there a minimum AMIBCP version that I need to work with this board?

5.02.34 can open but sometimes not work.

Talking about the rebar, is there a way to have it in the bios menu? Whats the recommend patch?

the known working way is to add rebar.ffs (MMTool). but you don't get a BIOS option, you need to run an APP in linux/windows to enable/configure ReBar.

Do you guys dump the bios or just use the downloaded version from gigabyte?

download, dump is modified by Intel ME at first start(may work but only on same motherboard)

After modding the bios do you "update" it using the BMC or something like fpt?

BMCWebGUI: create new RBU file from modified BIN.

https://forums.servethehome.com/index.php?threads/mz32-ar0-rev-1-3.40433/page-3#post-430448

 

[gsm]

The advanced menu with the hotkey is amazing, it has everything in it RolloZ170.
Im little insecure about the rebar + rbu hex edit.

My MU71-SU0 came with bios R22, but I can only find R21 for download. Aside of that is there any way for me to brick the board because of a bad bios edit?

 

[RolloZ170]

Aside of that is there any way for me to brick the board because of a bad bios edit?

you can flash back to working BIOS with BMCWebGUI, this does not need working CPU.

 

[RolloZ170]

Im little insecure about the rebar + rbu hex edit.

Download HxD
use MMTool to add. rebar.ffs

GitHub - xCuri0/ReBarUEFI: Resizable BAR for (almost) any UEFI system

Resizable BAR for (almost) any UEFI system. Contribute to xCuri0/ReBarUEFI development by creating an account on GitHub.

github.com

 

[gsm]

Following xCuri0 MMtool guide, but cant find Pcibus to fill Vol Index
Tried to manually fill it with volume 02:01-00 but it fails

Adding FFS module

Resizable BAR for (almost) any UEFI system. Contribute to xCuri0/ReBarUEFI development by creating an account on GitHub.

github.com

Tried to do a test run picking volume 03:02-05 in MMtool for rebar and copying the last line from rbu to bin, but update fails with invalid image warning

 

[RolloZ170]

Tried to do a test run picking volume 03:02-05 in MMtool for rebar and copying the last line from rbu to bin, but update fails with invalid image warning

you have copied the footer and calculated the new checksum and replaced the two checksum bytes ?

 

[gsm]

Got it! I did include the header in the checksum calculation at first, that why it failed. Now its going thru. Hoping rebar works.

 

[gsm]

Boot looping.
Added the rebar dxe here, but it was just a guess, as I was unable to find pcibus entry.
Would you mind to have a look at the correct volume index RolloZ170?

 

[RolloZ170]

Added the rebar dxe here, but it was just a guess, as I was unable to find pcibus entry.
Would you mind to have a look at the correct volume index RolloZ170?

see my post first picture.

https://forums.servethehome.com/index.php?threads/mu71-su0-bios-modding.54485/post-494471

 

[gsm]

I saw, but my dumped bios has no 02:01 ID. I download the older one from gigabyte to check out, as im unable to find R22.
let you know soon

 

[RolloZ170]

I saw, but my dumped bios has no 02:01 ID

just select pcibus

I download the older one from gigabyte to check out, as im unable to find R22.

maybe you have OEM board with unofficial BIOS.

 

[gsm]

Dunno, got the retail bios from gigabyte site and game is on! Truly grateful for your help.

 

[gsm]

I've got a new question (wasnt sure if i should open a new thread)
Is there a way to alow the processor (cascade lake) to use more power and keep clocks higher while doing heavy AVX512?

 

[RolloZ170]

Is there a way to alow the processor (cascade lake) to use more power and keep clocks higher while doing heavy AVX512?

the max. clock bins are fused.
check the table(HWinfo) if reached there is no way.

 

[gsm]

Got it mate! So i'm probably better off findind an OEM cascade lake with higher than average AVX512 clocks. Any advices aside 8252c?
Thanks

 

[RolloZ170]

Got it mate! So i'm probably better off findind an OEM cascade lake with higher than average AVX512 clocks. Any advices aside 8252c?
Thanks

i do not have all the specs. ask owners for the AVX512 clock bin tables.
maybe 8251C ?