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#46 RE: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 26.06.2018 09:43

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Not sure what you're referring to there about EFI booting? I was talking about, and thought you were talking about trying to get original windows key from stock BIOS that was included on the board.
It's in the ACPI section of the BIOS most of the time, but not always. Only way I know how to read/convert that is by booting into windows and checking with RWEverything where it's shown in human readable form
Even when it's not in same section as those guides, you'll still find it w/ RWEverything or other key finders

#47 RE: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 26.06.2018 09:50

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Checked the original bios for a valid key. For this type of board, and maybe similar boards from asus (or other mfs), a key should be findable in the padding (same as VBIOS). But for this board at the address where it should be, there is no key.

Doesn´t matter, I have a valid key.


EDIT: Inserted the key region from my second defective Board in the PADDING of my new BIOS, reflashed it and Windows is now activated . That was easy. RWeverything is now showing the MSDM Table too.


Now I am waiting for 2202. Still nothing arrived.

#48 RE: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 29.06.2018 05:54

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I wonder if we need to change the SKU when editing the ME for this? I don't think I did that, did you?
Some of the other threads on similar, using coffee lake 6 core CPU's on older boards, they had to change the SKU in FIT to X370 or Z370 instead of Z170 etc

#49 RE: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 02.07.2018 12:00

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The SKU? Against what? Corporate?

I will read that threads to find out more details.

The pinout of both CPU´s are identical. No differences, nothing.

#50 RE: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 02.07.2018 12:56

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@Lost_N_BIOS :

read something about CpuInitDxe. Should I give that a try?

#51 RE: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 02.07.2018 13:14

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SKU Change is done when cleaning ME, it's at those two top sections by the menu bar. Look in FIT, drag in a SPI dump or ME region and you'll see what I mean.

What did you read about CPUInitDXE? Any and everything is worth a try here, since you have a programmer all you need is time to try it all until you find the answer!

#52 RE: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 02.07.2018 15:16

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Yeah, read that. Since I have a cleaned ME, a change should be easy.

Someone changed CPUInitDXE with one that works with CoffeeLake and it booted. I changed it with the successor-board (G20CI) but it failed for Kabylake and Skylake

#53 RE: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 02.07.2018 16:40

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Tried several things. Board with Kabylake is still not booting.

I am now at ME 11.8.50.3470. Skylake boots, Kabylake does not.

Is it possible to lock out a next Gen CPU by the 4 UEFI key files (dbx, db, KEK and PK)???

#54 RE: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 06.07.2018 11:26

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Newsupdate:

my Kabylake is now successfully tested in another board (a MSI Board with B150 PCH).

There must be something in the BIOS or on the board, that is preventing the boot process.

#55 RE: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 06.07.2018 11:36

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Do you know of other instances when this did work by modifications? I mean, on other normal mainstream type desktop motherboards, by user modifications before the manufacturers got around to updating?
If yes, can you show me the threads? Maybe we can figure out by looking at those instances BIOS used.

#56 Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 06.07.2018 14:31

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@Lost_N_BIOS:

I made a significant progress!

I took the CAP File of the successor board G20CI (H270, supporting KBL), deleted the first 2kB, changed PCH to H170 using FIT and checked every setting. Used GbE and VBIOS from my BIOS, and...


KabyLake BOOOOOOOTS!!!!!

RAM is running at 2400MHz

The board is entering BIOS showing the contents via PCIe GPU.

but there are some issues. Of course.

- OnBoard HDMI does not work
- Temperature Reading of CPU is wrong
- maybe some more… have to be discovered



So... I think, ASUS built in something in their BIOS region, that is actually blocking KBL with G20CB BIOS, or something is missing.

#57 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 06.07.2018 21:18

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Awesome progress, and great find! I suspected something was missing in BIOS, more-so with the way that board is laid out physically

I assume it probably needs PCIE patched, we'll have to look at the PCIE patcher and get the dev ID's from your board with the other CPU installed.
On the CPU temps, that could possibly be laid out in the ME strap area, or some other setting in the ME. Did you use a older settings transferred ME or just change that SKU with ME that was already in there? If not, try that next.

Congrats on major progress!!!!

#58 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by jacky400 07.07.2018 20:40

Cool . Is it 7700k ? Boot into windows ok?

#59 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 09.07.2018 07:32

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I left the ME there as is, just changed the settings.

OnBoard HDMI may not work because of the wrong padding layout, but not for sure.

I will try several things today. Lets see what happens.

Currently it is a 7700, but I got a 7700k. That will be the final cpu, i want to get to work with that board.

@jacky400: I avoided to boot to windows in that state. But of course, that's scheduled.

I let you know my results today.

#60 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 09.07.2018 07:39

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If it's not in your list of "To try" already - I'd try copy over original or at least updated ME to the version I mentioned when the original boards all changed over to Ivy compatible (11.6.10.1196). This way you rule that out.

It's too bad we don't have vBIOS editor like FIT so we could copy over settings visually in vBIOS and GOP! Then you could compare vBIOS from this updated version vs your current older one, that's possibly key to the HDMI issue.
Or PCI needs patched, similar to coffee lake on kaby lake boards. You'd think that should already be done in the BIOS for the updated version though, but maybe not exact same layout locations for your board ID's or something, or some damn setting we can't see properly in the vBIOS is different.

Good luck in your testing!

We still need to find that new BIOS somehow!

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