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#61 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 09.07.2018 11:41

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Now I extracted the complete BIOS-Region of G20CI and inserted it into my G20CB with my updated ME... HDMI is still dead. But found the correct Windows License Key Information Place and successfully booted to Windows with PCIe Graphics Card and windows is activated.


Everything seems to work as it should. Ethernet, ASMedia USB 3.1 (connected to PCIe), Graphics Card, Sound...


Except HDMI and CPU temp. Is there a PCIe-Patcher available?

#62 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 09.07.2018 12:18

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The only PCIE patcher I know of is for boards to use coffee lake CPU's. But, I think reading about it, and looking at the batch files you may be able to see how to do it manually pretty easy with your own board info.
Fixing PCI-Express for Coffee Lake CPUs on Sky/Kaby Lake non-Asrock(and some new Asrock) motherboards

#63 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by jacky400 09.07.2018 19:01

Cool .To be honest , as long as PCIe GPU works and boot into Windows , it is good .

#64 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 10.07.2018 08:56

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That's how I'd be @jacky400

#65 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 10.07.2018 12:27

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I think too, because everything attached to any PCIe lanes is working. HDMI is not working, but attached to a PCIe lane. Maybe, the HDMI chip (ASM1442K) is not the same on the G20CI board, resulting in a different driver in the BIOS.


The wrong CPU temp, can also be a result of a different Nuvoton SuperIO chip, or different connection to it. Possibly a BIOS driver issue.

#66 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 10.07.2018 12:38

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Can you find the other HDMI chip, maybe we can find that related section in another part of the BIOS not in vBIOS, such as a DXE driver?
I see HDMI mentioned in setup module, and inside GUID A0327FE0-1FDA-4E5B-905D-B510C45A61D0 at Sub-GUID 380B6B4F-1454-41F2-A6D3-61D1333E8CB4 and sub-guide C5A4306E-E247-4ECD-A9D8-5B1985D3DCDA in your original BIOS.
And in second padding in BIOS region

I found those using UEFITool search, Unicode checked and unchecked

#67 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 10.07.2018 12:51

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There is no chance without a high resolution image or a board in my hands… maybe the ROG Forum... but I doubt on it.

#68 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 10.07.2018 12:56

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I'll look later, maybe we can find good tear down in a review. If not, maybe by extracting all I mentioned above, and compare with similar from the other BIOS (Give me link to that one, I'll check when I have a sec)

#69 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 10.07.2018 13:06

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I uploaded two files, one is modified and boots, the other is the original G20CI Update with removed cap-header (2kB).

G20CI-to-G20CB-1402-BIOS-VBIOS1058-GOP1079-unlicensed.bin : G20CB BIOS image with ME11.8, VBIOS1058, GOP1079 and replaced BIOS-region from G20CI

link: G20-BIOS

#70 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 10.07.2018 14:03

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Great, thanks, I will take a look. Was coming back now to ask you to put the currently working BIOS in there too for a good starting test point from any progress I might add

#71 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 10.07.2018 14:30

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Ah you mean the working G20CB Bios that works with Skylake 6700k? If so, it is in the folder now.

#72 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by jacky400 10.07.2018 16:36

If i want to use it with 7700k on my G20CB , which one should be used?

#73 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 10.07.2018 19:26

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@jacky400: G20CI-to-G20CB-1402-BIOS-VBIOS1058-GOP1079-unlicensed.bin is the one, that boots the 7700k.

But before you try to flash it, make a backup of your current bios with a flashprogrammer.

Keep in mind, that your old bios may have an integrated windows product key that has to be inserted in my image via uefitool and/or hexeditor.

Without a backup made with a flashprogrammer this key will be lost and windows license gets deactivated.

Just to mention if you dont know that already.


Known issues:
- onBoard HDMI is not working
- CPU Temp stays at 100℃


@Lost_N_BIOS:
Checked and changed several settings using AMIBCP, discovered many hidden settings, but currently none of my changes brought back hdmi or a proper cpu temp reading.

#74 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by Lost_N_BIOS 11.07.2018 05:19

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I wanted the current BIOS you are using, the Frankenstein one. That's this one G20CI-to-G20CB-1402-BIOS-VBIOS1058-GOP1079-unlicensed.bin I assume from what you mentioned.
I'll check in it, the HDMI stuff I mentioned, vs the original BIOS for your board. I was thinking further Frankenstein tests might help, module from OG into the current, or some hex copy into certain modeles etc.
I was thinking probably at least 2 or 3 ways, so maybe that many test BIOS if you are up for giving them a shot?

Maybe some reviews will at least mention the IC of the thermal/electrical probe for G20CI, but you are right, I doubt we'd see any mention anything HDMI related.
Are you sure the HDMI goes through a separate chip? I assumed, CPU/PCIE lane to output port

#75 RE: Progress made: Patching ASUS G20CB Bios to support 7th gen I7 by reactive 11.07.2018 07:12

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Okay, yes "G20CI-to-G20CB-1402-BIOS-VBIOS1058-GOP1079-unlicensed.bin" is the current Frankenstein's Monster :D.

I made a deeper look in the bios region of CB and CI, and it seems, that CB Bios isn't suitable for Kabylake, while within CI Bios I can find strings containing Kabylake... so, to run Kabylake I need the CI Bios region. Possibly with a hard work to get the issues fixed.

Of course, I will test everything I get.

Yes, I am sure, that HDMI port is connected to an Asmedia chip (ASM1442K)

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