Downgrade ME v9.1 to v9.0

Special Topics Intel Management Engine
1

Sorry for my language. I’m not native

I have LG computer
Motherboard is MS-7886 (OEM form MSI)

I already searched about downgrade a bit
I realized that I have to turn off ME lock and go flash ME via FPT

And I can’t use stock ME v9.0 downloaded from win-raid
I should extract ME fw from former bios

The problem is any bios can get from manufacturer web have no ME (I checked via ME Analyzer)

But motherboard is MSI OEM
Can I get any of MSI motherboard’s 9.0 ME fw and flash it?

Or there is some other way?
I attached all(just only two) my motherboard’s bios

Please help

bios.zip (3.65 MB)

2

Why do you want to downgrade from v9.1 to v9.0? What version did the BIOS have originally? Do you have read/write access to the Engine firmware region of the SPI/BIOS chip?

3

too sorry to lately reply
finally my ch341a is arrived. I totally forgot I have made a question even untill I get ch341a
again… I’m so sorry

1. motherboard has the v9.0 first time. I made upgrade to v9.1.
and I felt like there’s some minor errors. so I did some terrible things.
yeah… you know… I made a brick

2. originally v9.0… I can not remember exact decimal point version. Is it gonna be problem…?

3. Yes. motherboard have ME unlcok jumper

4

You don’t need an unlock jumper anymore since you have a programmer. If the mobo has ME 9.0 then you should stick to 9.0 and not upgrade to 9.1. Use the programmer to restore back the stock MSI BIOS and the problems should be gone.