Regarding ASUS Z170, as has been mentioned by LittleHill the risk in loading a Z370 bios region is the TPU. If this gets loaded with the wrong firmware, the board gets bricked with no easy way to recover. I have an Asus Z170 Maximus VIII Impact and the bios has actually 3 separate TPU modules, IROG1, IROG2 and IROG3, each with their own firmware version as visible in the bios. The respective GUID's are:

iROG1: GUID 38715E0A-ECD3-4776-8AC4-7D93510A7468
iROG2: GUID 475EB5AF-16F2-4727-BD69-0D1BF383196C
iROG3: DE9A07DF-B1C6-448B-B700-715F6BE6676D

The GUID addresses are applicable to all ASUS boards, however the actual contents of the RAW file inside is different for different motherboards - I have compared M8I vs M10F. SO flashing the Z370 bios region will most likely force an update of the firmware of these modules and in consequence brick the board. Would suggest trying to first flash the standard bios with these GUIDs deleted so the board would be unable to update the firmware in these modules and if this would not work I would try replacing the GUIDs from the Z170 board into the donor Z370 bios region. In any case, flashing the wrong contents into these modules seems like a bad idea.

who can help me to mod bios z270-a motherboard asus to cofee lake ?

hi guys where i can get tools?

Zitat von Dnatwork im Beitrag #46

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I have a Kaby Lake CPU, no Skylake. Is it possible to sacrifice the Skylake microcode instead, so I could keep compatibility with my current CPU if it doesn't work for some reason?

Thanks again!

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Zitat von GnatGoSplat im Beitrag #109

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Zitat von Dnatwork im Beitrag #46

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I have a Kaby Lake CPU, no Skylake. Is it possible to sacrifice the Skylake microcode instead, so I could keep compatibility with my current CPU if it doesn't work for some reason?

Thanks again!

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Did anyone ever answer this question? Planning to attempt my BIOS mod soon and I would rather sacrifice Skylake as well.

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hi who could help me to mode bios asus z270-a please for cofeee lake pls ?

There is a few ways to add/change microcodes and usually you don't need to sacrifice any microcode. The exception is BIOS like for H110M-STX because this BIOS is only 8MB and there is no enough space for more than two microcodes.
In my opinion the best way is manual microcodes update.

Zitat von ernesto_97 im Beitrag #111

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hi who could help me to mode bios asus z270-a please for cofeee lake pls ?

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Found this on YT: https://www.youtube.com/watch?v=hBDGf9wQvYk
TL;DR: Intel docs list Z370 as a 200-series chipset (lol), Z370 not to support Cannon Lake - could be a typo / omission since the H310 etc boards are listed as supporting Cannon Lake, then again they were launched a lot later then Z370.

Zitat von mtothaj im Beitrag #113

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Found this on YT: https://www.youtube.com/watch?v=hBDGf9wQvYk
TL;DR: Intel docs list Z370 as a 200-series chipset (lol), Z370 not to support Cannon Lake - could be a typo / omission since the H310 etc boards are listed as supporting Cannon Lake, then again they were launched a lot later then Z370.

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I've decided to take the risk and finish prepping the bios to be flashed, but prior to doing so it I've been curious to know other than shorting two pin is there a necessity to isolate a certain pin ? I've been trying to figure out from socket land map and reading 3 various source which pin to isolate. Do I have to look at both the land map of both gen 6, gen 8 and also the motherboard in order to determine which one should be isolated? Better yet if anyone could tell me do I need to isolate any pin if I'm trying to run a CFL on Asus M8F ? Thanks in advance !

I had updated my ASRock H100M-STX to the latest version (and ME) before finding out about this method, but I found I could temporarily lift the Intel ME security lock via EFI shell utilizing setup_var thanks to a post by some Chinese fellow on github. I've transcribed his instructions below. This is my source: https://github.com/damnnfo/DeskMini-110-...%99%8D%E7%BA%A7


Format a flash drive MBR/FAT and put the attached in a folder named "EFI", or some boards require it to be just at the root of the flash drive. (so just USB/BOOT)

Boot from it via UEFI. At the prompt type: setup_var 0x28 0x01

Ignore the error at the end, and you can run it again if you like to confirm that 0x28 is indeed 0x01 (ME unlocked) instead of 0x00 (ME locked). This will last through one restart, then be locked again.

Restart and immediately enter the BIOS and look at your ME version. It should now read 0.0.0.0. Update your BIOS to an older version that contains the ME version you want.



If you board has the variable at a different location then you can find it with UEFI Tool & IRFExtractor

1. Use UEFITool to open the BIOS ROM, search for "re-flash", and right-click to Extract the body. Save as Section_PE32_image_Setup_Setup_body.efi

2. Open Section_PE32_image_Setup_Setup_body.efi with IRFExtractor and extract the text Section_PE32_image_Setup_Setup_body IFR.txt

3. Open Section_PE32_image_Setup_Setup_body IFR.txt with any text editor and search for "re-flash" again. It returns "One Of: Me FW Image Re-Flash, VarStoreInfo (VarOffset/VarName): 0x28, VarStore: 0x1, QuestionId: 0x11D, Size: 1, Min: 0x0, Max 0x1, Step: 0x0 {05 91 E3 03 E4 03 1D 01 01 00 28 00 10 10 00 01 00}"

Here, 0x28 is the address of the variable we want to modify. The default value 0x00 is disabled and 0x01 is enabled.

Question on Gigabyte DualBIOS: since flashing the BIOS on a Gigabyte board flashes both main and backup, can I short the /WP pin to the neighboring GND of the backup flash chip in order to prevent it being flashed? Or could that damage/overload whatever circuit normally pulls it low?

I'd like to flash just the main BIOS chip with the customized firmware, but if I do something wrong, I'd like to be able to boot into a stock backup BIOS.

Zitat von Dnatwork im Beitrag #77

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Zitat von chinobino im Beitrag #76

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When I download the HWBot file Z17MOCF751A.rar it extracts fine and the resulting 16MB file can be opened in UBU (Aptio V).

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Try downloading with a different browser or clearing your browser's cache.

[Edit] It also contains Intel ME 11.6.0.1126.

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Tried that, tried a different computer, but still doesn't work. I don't know why.

[Edit May 1, 2018]

I finally found a way to download the file successfully. I had to use a computer with Windows 7. I don't know how or why, but every attempt to download it on Windows 10 failed. None of the RAR decoder programs could recognize the file. Unfortunately, all my computers at home have Windows 10.

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I've checked your BIOS file. You inserted only two microcodes, you didn't change the SKU, but most of all you didn't use the patcher. So I am sure that your external graphics card will not work.

@MOB, there is no attachment.