@noink for some reason my board doesnt boot again after removing the solder and trying again the i7-950 if it clocks well. After resoldering again and trying the x5675 it doesn't boot too.

@Lost_N_BIOS
I think I found out by comparing a 501 on naked eye what missing.
The 202 miss a SMD on the EV-VR circuit (UP0851 or something located nearby the chipset ) since it could be something else I'm going to flow a SPI socket on the 501 and I call it done.


@eivrah
Try to flash back the SOL bios on few post back. How are you flashing the bios? test clip and hardware programmer(type?diagram?) or desoldering and drop in socket?
Also, I just tried a stock 501 and the x5675 on it boot fine with without those EV jumper in non-default position, so, your should too.
If nothing, try to trigger the "memory decreased" fail_FAIL by changing and restoring the previously used hardware\memory slot till the board beep on boot, could take some time.
Anyway the mybackup.bin on your previous post is kinda broken if you flashed that it might not work.

@earthoo7

I'm not sure what you're asking here. Do you have a working motherboard? Are you trying to update to a newer bios? You can flash the newer .bio file from within the existing bios.

If you mean the files you attached to your post. You have to merge the two dumps in a hex editor for them to be readable in Uefitool (8MB + 4MB file). See attached.

@IntelModder

i faces many time intel bios corrupt in desktop motherboard
so if we have old backup working dump of bios then it is okay but many time
we have no all bios dump.
in this condition we need to make a new bios from .bio file
so my question is can we get bios region from .bio files with help of uefi tool or other utility.
bcoz we need only bios region & me region we can replace via intel fitc tool
hope you understand my question?

@noInk already tried the SOL.bin it didn't work in this case, i'll to remove and readd memories later when I get home. Also before that I bought PCI-E to 6GB Sata 3 it detected but didn't boot. I'm flashing using the clip.

@eivrah

Try to verify if the content flashed is the same of the file by dumping and compare.
The board could also be incompatible with certain PCI-E add-on, XHCI are know to cause power issue.
Dunno about SATA type.

@noInk yep I verified it and it was the same. ohh bummer maybe I couldn't use the PCI-E sata 3 then.

@noInk tried removing and adding ram also tried the jumper in different position no luck it didn't boot also compared after flashing it was same any thoughts? Can I try your backup bios?

It boots now @noInk what a dumb board it is I flash a lot of files and compared the readback bios non of them is identical. What a weird bios Intel has. Also the PCI-E to Sata 3 is working just need to be in Legacy mode.

@eivrah

Do the SOL bios work now and you sure of the content by byte x byte?
If so, keep it on and try to not use the EV jumper. Also, re-test the SATA addon. I recently acquired a 501 revision and it boot fine ( i7 and XEON ) without the EV modification.

Anyway, I'm having issue with the hardware programmer, the FlashCatUSB 2.1 I got doesn't seem capable to manage in-circuit SoIC what you are using to read and write in place to the 501?

@earthoo7

Technically I think what you're asking is possible, but it is very difficult. If you study the structure of a dumped Intel bios and the equivalent .bio file from Intel you can often find the same volumes and structures. A bit of work with a hex editor and FIT you might be able to reconstruct something - provided you had a reference dump to begin with, or you're happy to keep making educated guesses.

But it's difficult because sometimes one Intel .bio file is used for different motherboards (eg one .bio for DX79SR, DX79SI, & DX79TO). In that case it is really difficult to see what volume belongs to which motherboard.

I believe the simple answer to your question is: no.

@noInk I'm only using Ch341A with Clip, it's cheap and does the job. I did compare it, not 100% identical when I checked via winmerge some but most of the lines are the same. My board had a custom Logo I made, so I can confirm that the SOL file is in it now cause it changes the Logo. And yes I remove my soldered pins, my i7-950 and Xeon x5675 works. My Sata add-on also works. Let me know how high you can clock your new board. I can only go 180 multiplier with mine higher is unstable, my RAM might be the problem.

@eivrah

Well, I ordered one CH341A since getting the SPI socket on December from the other side of the world is tuff.
The FlashCatUSB 2.1 just doesn't work with or without external 3,3VCC on basic things like that, dunno for more advanced. I also shorted out all the 501 quartz crystal just to be sure..
The funny side is I can detect the chip on GROUND and the CHIP SELECTOR without any VCC (no power cable or battery)
kinda pissed by the disorder having stuff all around since I paid like a lot plus the shipping cost to be sure to not get issue like these.
I mean, what an hardware programmer does except reading and writing stuff? taking space? wasting time? MEH
Can you make a diagram or take a photo out the way you are connecting the CH341A on the IC CLIP and also send me a link to the software you used?
Thanks!

@noInk CH341A Program

I made a quick diagram but I only emphasize the red wire should be connected to Pin 1 and on the BIOS chip with the dot, the rest on the other pins:

Here's mine

@eivrah

Thanks a lot, gonna try it once it arrive. Asking cause I don't think is coming with any driver or software.
The clip is already attacked. Will report back.

--
The CH134A didn't work either.
I desoldered the 25x16 form the 501 and the PIN 3 and PIN 4 were GLUED to the PCB PAD underneath the leaded free (tin/zinc) solder.
So, to anyone reading.. don't do that without lab experience or lucky fell, dunno if it was done by manufacturing process or by someone after. Overall the board was in very bad condition.
Also watch out for the nearby PCI-ex x16 connector: the plastic gonna melt away at 270° already (super cheap!) require insulation.
END of the story;
I'm going to use(NOT that I really do) the 202 without overclock-ability since it has already the SPI (SOP)socket and it's way lot faster to flash\reprogram.
Thanks by the way.

--
I was finally able to get an untouched bios from a working DX58SO by hand, following the full modified programmable file with some squeezed microcode in (it's pretty much the same as the one I've been re-building from since I got the board)

DX58SO 501 UPDATED SOL

PCH straps: 1
PROC straps: 1
 
GbE region offset: 1000h
MAC: 70:71:BC:76:BE:A5
Version: 16.8
 
BIOS region offset: 3000h
Region access settings:
BIOS: 0Bh 0Ah 
ME: 0Dh 0Ch 
GbE:  08h 08h
BIOS access table:
      Read  Write
Desc  Yes   No  
BIOS  Yes   Yes
ME    No    No  
GbE   Yes   Yes 
PDR   No    No  
 
Flash chips in VSCC table:
C22015 (Macronix MX25L16)
1F4600 (Atmel AT26DF161)
EF3015 (Winbond W25X16)
898911 (Intel 25F160S33B8)
BF2541 (Microchip SST25VF016B)
 
CPU microcode 
CPU signature: 000106A5h
Revision: 0000001Dh
CPU signature: 000106A4h
Revision: 00000013h
CPU signature: 000206C1h
Revision: 00000006h
 
Additional CPU microcode
CPU signature: 000206C2h
Revision: 0000001Fh