Bios Mods -The Best BIOS Update and Modification Source

Hello,
I know Supermicro P6DBE is an old motherboard, I am trying to play a bit with it with adapters to’ have a dual Tualatin setup.
Can someone put last coppermine and Tualatin microcodes on the bios? I have the rev 3.0.

Here the bios

https://www.supermicro.com/support/bios/...dgeb21.zip

It is beyond my expertise.

Post a screenshot of Mainboard tab of CPU-Z.
Explain exactly what happens when you try to boot with new CPU.

Hello here attached the screenshot of cpuz and a screen of what happen when I put one Tualatin with adapter. It boots (sort of) with one only, not two.

Show a photo of your Tualatin CPUs.

It is exactly this one, SL5XL:

https://www.memory4less.com/images/produ...L-1-lg.jpg

https://www.cpu-world.com/sspec/SL/SL5XL.html

Did you made a hardware mod with Slot1-Socket370 adapter for SMP?
Some information - http://www.cpu-central.com/dualceleron/index-dc.html

I have the proper adapters to make it work with Tualatin. I did not made any modification myself.
I have two Asus S370-DLs for SMP + LinLin adapters for Tualatin compatibility.
Already tested on a mere P2B and the stacking works.
I think I only need the bios to be modded.
Would be happy even if only one Tualatin would work honestly.

Make DOS diskette, download and unzip all files for the modded version of CHECKUP7 to this DOS diskette.
Boot from this DOS diskette and make a photo of the screen with results.

Hello here the screen

It's Coppermine, not Tualatin.