double post - removed

@stealthwang ;
If possible can you provide me the modded BIOS for the Asus Z9PR-D12, I also have the same board. Thanks

@lingling300 - I would try flashrom method, or use flash programmer (If you have flash programmer, make backup so you can recover, then you can also try old DOS AFU and /GAN option method)

@ Lost_N_BIOS

thank you for your answer.

flashrom gives me an error when I try to dump the bios "FCH device found but SMbus revision 0x51 does not match known values - could not determine chipset generation - no eeprom found"

AFUDOS also did not work, saying the BIOS was locked (despite I disabled BIOS write protection in BIOS) however I was able to dump the bios via AFUWIN.

but flashing the dumped bios to the other board failed. both AFUWIN and flashrom were not able to flash it.

@Fernando
Hi man, I have read most of the post, but I cannot solve my problem. basically instant flash doesn't read the bios file for me.

I already opened the modified bios in UBU_v1_79_8 and renamed it with the original name included extension, but it still doesn't read the file. (No image file detected). I have an Asrock H310C.

Thank You

@Fernando

Thanks for answering me, I don't know about modules, I just dump the bios and edit in HxD and change the mac address and motherboard S/N.
I also tried the Asrock files but nothing. The original BIOS is H3CMHDV4.20.

Thank you

@felone

Exact model of the H310C ??? There's a lot of H310C

Did u read the ASROCK section?
Latest UBU has an option on exiting to remove Asrock bios protection for AMI V 16Mb...ur case, the name of the output file will be apr_H3CMHDV4.20, just remove "apr_" from it
This should be done as last operation for protection remove, in UBU
Also download the correct file bios as Fernando mentioned before...the one for Instant Flash
Asrock also adverts that the latest update to 4.xx is an non-reversal operation to previous bios

I've tried flashing my Asrock Taichi Z370 (asrock.com/MB/Intel/Z370%20Taichi/index.asp#BIOS) without success using both the flashrom method and the InstantFlash method from within bios. I've tried flashing off a modded BACKUP.ROM (using both the suggested MOD.ROM and the default bios name Z37TC4.20) and saving the mods with and without removing security check in UBU. I suspect that Asrock's more recent bios versions, like 4.2 which is installed on my PC, are no longer modifiable without a programmer device. But as a last ditch effort, I'm attaching my modded backup rom in the hopes that @Fernando or @Lost_N_BIOS have other suggestions.

Edit- Can't add my modded rom in my post. Newb.

@felone - Maybe you broke the BIOS when you edited it?? Please give me original dumped BIOS and tell me what serial and MAC you want changed, to what, and then I will see if editing maybe could break the BIOS. How did you edit it, just via hex on entire BIOS as a whole?

BIOS above chipset 1xx tend to not work anymore with removing Asrock Protection method, maybe started with 2xx chipset I can't remember, but for sure it will not work on 3xx models.

@cmyasrock - See above, bottom part of comment, that applies to your Z370 for sure. Annex/flashrom method is only way, or priogrammer.
If flashrom method is failing for you, and you can dump BIOS without issue with flashrom, then probably your mod BIOS is broken.
Does it flash in OK, then bricked, or what?

You can now post links, put BIOS in max compressed zip. Please also include your original DUMPED BIOS, and your mod BIOS.

Greetings, everyone.

Thanks for this extremely useful topic (and forum in general). I'm trying to flash my Asus WS X299 Sage mobo with a modded BIOS (there's a need to add OEM strings instead of dummy "System Manufacturer" and so on).

I've read the first post carefully and unfortunately stuck with flashing. Here's what I did:

1) Downloaded the latest BIOS for my MB from Asus website
2) Used AMIBCP ver. 5.02 to open CAP and change text strings requireed. Saved a copy of CAP (unsigned). Tried to flash the unsigned one with UEFI built-in utility and of course it didn't work.
3) Used UEFITool 0.28.0 to extract the body from Aptio capsule, saved onto a ROM file. Then tried to flash that with AFUWINx64 (following the instruction on the very first post on this thread) and it still gives me error 18 checking secure image.
4) Just out of curiosity tried putting modded CAP (with appropriate name of course) on a 2gb fat-32 formatted USB stick and initiated USB Flashback, but as you can imagine it didn't work (I mean, I'm pretty sure it should NOT flash unsigned CAPs either, right?)

I noticed that /GAN command is not supported on AFUWINx64 v.5, however not sure if that's the issue (was trying w/o it).

What am I doing wrong here?
Apologies for the stupid quesion, I'm new to all this and would appreciate patience and guidance on the matter.

Thanks, for the welcoming:).
Well, I named it as "WSXSG.CAP" - that's the name according to mobo manual I have. It just acted like there's wrong image/wrong USB (blinked 3 times and turned LED on solid w/o further activity).

So, just to confirm: USB Flashback should flash even the unsigned capsule?
I will try to put original BIOS in order to understand whether the problem is with the USB stick (I remember it's kind of picky to those).

UPD:
As I expected, the original (non-modded) CAP is flashing from the USB stick via USB Flashback without a problem. So, either I broke something with AMIBCP tool (clumsy hands) or it simply doesn't like unsigned images.

Is there any other way to modify OEM-related strings? I've heard about some DMIEDIT tool but wasn't able to find it anywhere, don't think it's available to public.

Zitat von Lost_N_BIOS im Beitrag #805

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@cmyasrock - See above, bottom part of comment, that applies to your Z370 for sure. Annex/flashrom method is only way, or priogrammer.
If flashrom method is failing for you, and you can dump BIOS without issue with flashrom, then probably your mod BIOS is broken.
Does it flash in OK, then bricked, or what?
You can now post links, put BIOS in max compressed zip. Please also include your original DUMPED BIOS, and your mod BIOS.

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