Thanks for your answers!

amd_comeback, BIOS is the latest, for sure I've just flashed it from windows , rebooted my pc and made a -greset. That didn't help, the fan still runs at 100% of speed.

Unfortunately, I can't check sawfly_clean2.zip now, because I have left my CH341A at work , so I'll flash the rom only on monday.
But I'll try to get the original MAC-address too, but even on the plate with ethernet were no stickers with the MAC-address.


Turning off AMT in BIOS gave no result. With AMT turned on I could boot up in ME BIOS extension, it worked normally - default pass is 'admin'.
Of course, first I tried to find the MAC-address over there, but I couldn't.
The Quiet System is turned on, but this doewsn't seem to work.

thermal paste replacement and dust removal can work.

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Intel(R) Management Engine Firmware Update Tool
https://download.lenovo.com/ibmdl/pub/pc...6_1_30_1074.exe

I replaced thermal paste a week ago. It's clean inside and CPU temperature is nearly 30 °C.

Flashing ME using Intel(R) Management Engine Firmware Update Tool ended with Error 8704: Firmware update operation not initiated due to a SKU mismatch.



Could it be because of changing CPU (I5-650 on the same I5-650)? That was the first thing I tried during diagnosis of the problem

run as an administrator?

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https://www.youtube.com/watch?v=ObTnRdvl8Xs

Yes, I ran it both from windows with administrator rights and from Dos - the result is the same: error 8704.

@sawfly - Try >> FWUpdLcl update_file_name.bin -generic << Use this format, if OEM ID required add it before generic but try without first
Also, be sure you are using the correct ME FW System tools package, there is two v6 branches. V7 may also work if you can't get it with either V6

If ME FW is corrupted, the ONLY way you can fix this is via FPT with FD unlocked, or with flash programmer. You cannot use ME FW update tool is ME FW is corrupted (ie you see N/A or 0.0.0.0.0 for version anywhere)
I assume it's still corrupted in some way, due to 100% fan speed, so I wouldn't even waste my time with FW Updater

For MAC, be sure to look on memory slot area, on the slot itself and or under the memory you may find sticker

ONLY BIOS/ME from post #23 should be used to fix your system, run your BIOS/ME FW through the guide and redo the ME FW using your own systems BIOS/ME as base, If you guys can't get that let me know and I will do for you

I tried Intel Management Engine Firmware Update Tool (both 6.2.61.3535 and 6.1.30.1074) from the official site and the one from post #2. Still error 8704.
Adding -generic throws error 8716: invalid usage (seems that I've done the wrong command, but there was no -generic in the arguments list).

Than I searched the mac - address again under the back. I took off ram - and what's there?

That's a crime shame, I was shure I looked over there..
So the mac was found: E89A8F D5A97B

I flashed BIOS with firmware from post #29. The PC started from the third attempt, but even then it restarts after 10 seconds of working, so I can't get into BIOS. The fans are running on full speed.

I'll try to run my bios through the guide, but I'm not sure that I'll be lucky in my attempts

There is still something wrong with the ME Region.

Try these, they have the correct MAC address now:
sawfly_macDT.zip is same file as sawfly_clean2 but with correct MAC address
sawfly_macMB.zip is same file as sawfly_clean but with correct MAC address (this worked for your but fans still 100%)
sawfly_macMB_FPTchecksum is same as sawfly_macMB but with the FTP checksum value modified. (this is a part of the ME region)

The original poster had the DB SKU, so I'm not sure why the DB SKU ROM didn't work (sawfly_clean2) maybe I patched it wrong.

The original RGN's I used from the repository were:
6.0.30.1203_5MB_DT_PRD_RGN
6.0.30.1203_5MB_MB_PRD_RGN (I noticed this is one is larger sized)

I was unable to find any RGN .BINs for 6.0.31.1208.

Also remember there are two 5MB SKUs, I'm not sure which SKU firmware update you downloaded which gave you that SKU mismatch error and which firmware you had.
There are DT and MB SKUs for that 6.1.30.1074 that you tried to flash.

nikey22, thank you for the firmwares!

I flashed them one by one, here is the result:

sawfly_macMB_FPTchecksum - ME version is N/A in BIOS, both fans (cpu fan and power supply fan) are running on 100%.

sawfly_macMB - ME version is OK, MEinfo works normally. But fans are running on 100%. I performed -greset, I tried to start PC with ME jumper on, I turned off AMT in BIOS - the fans are still running on 100% of speed. I tried to flash ME with the original firmware from lenovo support centre, but I got error 8704 - SKU mismatch.


sawfly_macDT - the fans are still running on full speed, ME works normally: ME version presents, MEinfo works normally. I performed -greset, I tried to start PC with ME jumper on, I turned off AMT in BIOS - the fans are still running on 100% of speed. I flashed successfully ME with the original Lenovo firmware (see screenshot) and flashed BIOS - the fans speed doesn't change in bios/dos nor in Windows.


It seems to me that with sawfly_macDT ME FW works as it has to, but the problem with fans is present.
I really got no ideas, what else could it be?

Fans may always run 100% if jumper on, usually that would disable ME FW too, but seems you can detect it. Are fans running at full speed without jumper?
Does your BIOS have a fan speed control setting, that maybe was accidentally set to full speed? This probably due to stupid QST part of ME FW, it's a mess, and I see this is only thing that controls fan speed in your BIOS setup settings... So probably QST Config missing in the ME FW you flashed in
There is a huge thread about that here somewhere, and if you find it, you can PM the guy who we were talking to it about, I sent him all the QST tools and PDF's etc, and he figured it all out on his end. So, I'm sure he can help you with making a QST config file for your ME FW

If jumper is on, first 10 seconds when Lenovo bios logo is on the screen, the fans are working in silent mode.
Then the fans are start working on full speed and appears error 0135 - fan failure.

There is no mention of fan speed, Intel QST, etc. in BIOS. I can get to Intel QST configuration in Intel me bios extension, but there is only one option - enable and disable. And after changing it to "disable" I couldn't boot the PC until I disable ME with jumper.

I found this thread (not so large but with the same device and trouble) - is that it? If yes, I have the same one m90z on my work, but I can get dumps from it onle after awhile due the quarantine.

Try to update the ME Firmware now with the FWUpdLcl.exe FW6.1.30.1074.BIN command that you used before. I think the SKU problem should be fixed since you are using the "DT" ROM now.
check the file "FW6.1.30.1074.BIN" with MEA and see if it truly shows a "DT" SKU.

nikey22 , thank you!

Yes, I can successfully update the ME firmware. I have updated up to 6.2.61.3535 from Lenovo official site.
Both 6.1.30.1074 and 6.2.61.3535 show "DT" SKU.


So the only trouble left is 100% fan speed

@sawfly - yes, that was the thread I was thinking about. PM that user and ask him to send you the tools and PDF, and then ask if he will help guide you or tell you how to create file and fix what you need.