@kosi_ Once you have unlocked the BIOS/SMI lock in grub with setup_var, create a backup with FPT as described in the guide and or post #2 >> FPTw.exe -bios -d biosreg.bin

Modify biosreg.bin with your same modifications you made before, then flash that (modified) BIOS back by using FPT >> FPTw.exe -bios -f modbiosreg.bin

Nothing uses AFU here, nor any backups from AFU etc. USB boot is fresh formatted FAT32 drive, do not make bootable with anything, only put the several (x4) copies of the efi file on there, then additional copies (x4) in the second folder as shown in the linked images for the other post (not my guide, but the other post I linked for you)
Sounds like you have not booted to grub and unlocked BIOS lock/SMI Lock via Setup_var yet, so you cannot flash anything with FPT until that is done.

It's OK, just forget AFU, read what I said in post #2 (below the AFU stuff, I only mentioned that in general so you'd know how to use AFU).

https://rog.asus.com/forum/showthread.ph...&highlight=g771 - this instruction works.

Again, AFU is not used for this process, at all. Nor is Rufus, or bootable USB etc. I don't think translation is the issue, you're doing things I am not mentioning at all, and things I am saying do not use or do.

Did you do the grub steps yet?

Setup_var 0xAE 0x0
Setup_var 0xAF 0x0

If yes, show me screenshot image of that, use camera. That is done on FAT32 format USB stick, not made bootable, not made with Rufus, nothing, only format FAT32 via windows right click and put Shellx64.efi file on there, then go to exit page of BIOS and choose "Launch EFI Shell from filesystem device"

That has to be done first, then you can use FPT to reflash BIOS.
After that is done, use FPT to create backup of BIOS region >> FPTw.exe -bios -d biosreg.bin
Then modify that file again with whatever modifications you want.
Then flash back that file using FPTw.exe -bios -f modbiosreg.bin

OR - other method, not applied to anything above

If you want to use AFU, you can use the version @Toorist mentioned (afuwin64 5.05.04), to flash the modified BIOS I sent you here
http://s000.tinyupload.com/index.php?fil...818027226153645

Guide he linked above too.

You may have already got this figured out, sorry if so, I couldn't tell by your PM

Hello 2 all!

Dear @Lost_N_BIOS ,
I want ask you for help.

I were have Asus G771JW with default bios. I am upgraded it with official cap files from support Asus page up to last version 211.

After that I were found out some info on supporting NVMe on my laptop as bootable. It were necessary flash the modded bios (on the most popularly source on G771JW in Russian 4pda it is modded version KOSIMOD; as I understood it is mod from this theme). It is working perfectly, all are bootable from NVMe, any OS's.

But I has got such trouble. My laptop was stack on the boot with ASUS ROG logo of the bios. No reaction, no opportunity enter to the bios settings or select the boot source.

For the great luck I am reflashed the bios by CH341A with a some full dump of the bios. Previosly I am saved my own dump of the bios.

Now I want check my dump of the bios, correct the error and flash my edited dump of the bios.

How I can do it? Any advise, please.

P. S.

Sorry, English it is not my native language.