@noInk I'll chat the seller if he has other store location maybe he will reply a day or two. You mean this free clip PCB?

@eivrah

Nope the CH134A it self, I'm not using the adapter i'll pin in the dupont wire. Your has different resistor, fuse, TEXT and some trace on the back are on totally different path.
Will certainly do something different it arrive Thursday.! I already order one, hope it's the same as your like in the photo!
Thanks eivrah I hope that the issue! If it work you don't know how much time this will save for me! I'm feeling good chance with the 200 TRFC :D

@eivrah

I didn't received yet the CHA341A with the other PCB type, perhaps tomorrow the package will make it trough. UPDATE: Got another one with the "PCB B" (doesn't work).
Anyway someone should try to compile a list of supported in offline system SPI hardware programmer know to work on intel EOL board.

DX58SO2 SPI

@noInk it's the same as yours?

@eivrah

Yea, the one I received had the same as PCB B figure. It didn't worked.

New year, new chance, I hope.
I've got a spi programmer and could read the content of the chip.
Now I don't know how to get further. Is it somehow possible to "restore" the image without a second NUC to take the flash image from?

@elektron

Your ME region is corrupted. Did you used any third party tool? The image has still the descriptor and relevant unique data.
Unfortunately if you don't have the backup it would be too much time consuming for me right now ( I'm dealing with stuff that doesn't work ) to build your ME region from 0.
I sent you one quick reconstructed ME bios image that might or might not work trough PM.
Flash the image with the hardware programmer and report back.
If it doesn't work you need to build and configure a compatible ME version and replace the ME region on the binary output of your programmer.

@noInk
Thank you very much for the reconstructed images. I've tried both but they don't seem to work. The blue power LED stays off and fan is spinning at full speed. The same behavior as after the unsuccessful bios update.
As I understand you right, the last chance would be to (binary) paste/replace a working and compatible ME part to the programmer window and flash this "combined" BIOS to the chip?
Sounds crazy, I don't know if I'm able to do all these steps the correct way... but I will try.

@elektron

Yea, I just extracted your initialized data and merged that portion with a stock uncofigured ME image.

You need to read it all and follow the full procedure it involve many step which I didn't.
There guide on the forum.
[Guide] Clean Dumped Intel Engine (CS)ME/(CS)TXE Regions with Data Initialization

@noInk
I have very "basic" problems with following the steps:
How can I open my ME-corrupted flash image in any of the mentioned tools, like FIT or MEA?

Your reconstructed image shows SKU Consumer H and Chipset SPT/KBP-LP C for the ME part.
Is this the correct one for the nuc platform?

@elektron

You can't open your "original" ME because it's not there.
Probably its the right PCH SKU, I have no idea. Unless you see that PCH\SKU from a twin dump you should trial by error the 11.0.0.1180 ME version (check the @plutomaniac thread Intel Engine: Firmware Repositories Intel CSME 11.0 Firmware Repository).
Once you get one configured to boot and defined the PCH\SKU eventually you can try to merge your older data back.

Try to ask @Lost_N_BIOS maybe he can help you prepare the 11.0.0.1180 ME SKU variant, or know already the PCH\SKU for the NUC series.

@elektron - I can maybe help, if you link me to stock BIOS download page for your system, and or give the exact and FULL model name.
Then maybe I can find someone else's dump to use as base to redo your ME FW, otherwise nothing can be done as you can't simply use a stock unconfigured ME FW, it needs to be configured for your exact system
What did you do that corrupted the ME FW like that? Nothing from your dumped ME FW can be used to correct any other ME FW to put back in there, it's all messed up so don't even waste your time trying anything like that.

I don't know where else to post this tbh. @LOST_N_BIOS
I have been running the same rig, i7 920 on an older intel DX58SO motherboard with 8gb DDR3 for like 8 years now, and I want to swap it out for a xeon x5660 that I bought on ebay to squeeze a couple more years out of my PC. When I put the cpu in, the PC turned on with no display, turned off after a few seconds and turned on again with still no display. I think the issue is I need to update my motherboard's BIOS, but intel has removed any downloads for the DX58SO motherboard from their website as of a few months ago I think. Is there any workaround for this?

@sirrelll

latest offical version for the DX58SO is SOX5810J.86A.5 ̶5̶9̶9̶600


--

Got the composite socket in place running on the DX58SO2 and updated the bios for microcode, RAID and NVME support.
Better board already on stock overall.

Unfortunately Mine is a v1, I can't find a place on the board with the socket like yours does?