@Fernando
I believe I succeeded to prepare a modded image, but I'm having a problem to flash it.

I thought I would just make a bootable USB with the files taken from lenovo zip file that I showed you, with the imegefb.rom replaced by a modded version. This does not work. I include the console output:

flash2.exe imagefb.rom /bb /rsmb
 

it seems that in the end, the afudos.exe is called.

Maybe I should call afudos.exe directly, but somehow force it not to verify the image? Is it possible?

EDIT by Fernando: Post shortened by putting the AFUDOS messages into a "spoiler" (to save space)

@Fernando
Thanks again. I saw this thread before, but I didn't know that instructions for ASUS apply to my Lenovo board.
I checked the files that I got from Lenovo and I can see afuwin and afuwinx64 tools, so this might work.

@Fernando
OK, I'll compare the version that I have with the linked one.
I'll try to check if my version lists /GAN option with awuwin /h.
If it doesn't, I'll use the linked one.

@Fernando
Afuwin fails.

C:\SWTOOLS\FLASH\Mod>AFUWINx64.EXE IMAGEFB.CAP
+---------------------------------------------------------------------------+
|                 AMI Firmware Update Utility  v3.05.04                     |
|      Copyright (C)2013 American Megatrends Inc. All Rights Reserved.      |
+---------------------------------------------------------------------------+
46 - Error: Problem getting flash information.
 
C:\SWTOOLS\FLASH\Mod>AFUWINx64.EXE IMAGEFB.ROM /GAN
+---------------------------------------------------------------------------+
|                 AMI Firmware Update Utility  v3.05.04                     |
|      Copyright (C)2013 American Megatrends Inc. All Rights Reserved.      |
+---------------------------------------------------------------------------+
46 - Error: Problem getting flash information.
 

Hi Fernando, thanks for your support, I think where the problem lies now, I am not able to flashback my bios on my Asus Formula V Maximus, as you mentioned the blinking process needs to come to and end and in my case it's just 4 blinks and then the motherboard led is stable red, so it seems that begins the process but it gets stuck, I am trying with 256 mb, 512 mb 4 gb, 16 gb and 32 gb pendrives formatted in FAT, FAT32, normal format, quick format, via windows, via diskpart, but no luck so far, I've seen that the bios chip might be faulty and that I can aquire one via Ebay, I've also seen that I need to unplug everthing from the motherboard except one ram slot and the cpu, but still no luck so far. I'll let you know of my progress, thanks again!

Hi again, now I have been able to flash the bios using a standard bios file 1903 not modded using the ez flash bios tool, so the issue is in the usb flashback method, I remember that a user called SVEM was able to use a Asus Suite via windows where he disabled the Security option, maybe that's my best shot, but all the setups i've tried in windows 10 are not compatible, not even using the compatibility option. I think we're close.

You should use Fat32 pen drives partionned MBR. (never GPT) f

Hi Fernando, now I have been able to flash the bios via windows using the EZ update windows method, i haven't gotten any errors, but still when I go into the bios I cannot see PATA devices, here's my modded bios, I have ussed the MMTool program and inserted NvmExpressDxe_4 file.

@glorifyday - There is this you can try, from the description it looks like it applies to your system. If it updates the BIOS, let me know, I will repackage with your mod BIOS instead
[Request] ThinkCentre M93p SFF PRO (type 10A8) - BIOS: FBKTD5A - NVMe bios mod

If that does not work, or you do not want to try it, check your board ALL OVER, look for 2 or 3 pin header (may have jumper on it, may not), that has label near it that says FD, FDO, Service, ME, etc.
If you find this jumper, let me know. Be sure to look above and below memory slot tabs too, sometime jumper hide there and you can't see due to the thumb tabs.

The only way I suggest is with FPT or get a flash programmer, if the above BIOS package does not work and you do not have a jumper
FPT flash may not be possible, and you will need to first dump BIOS with FPT, then edit, then reflash (DO NOT use the file you have now with FPT!!)
Some errors you can get around, others you cannot, but I can't tell you what is possible and what's not or what to try until you attempt to flash with FPT and show me the error
Here's how to do that, remember, none of this has anything to do with the mod BIOS file you have now, or anything from the stock package. With FPT you ONLY modify and flash your FPT Dumped BIOS.
FPT can brick your board in one click, do not jump ahead and try anything other than what's mentioned here, wait for further instructions.

Check BIOS main page and see if ME FW version is shown, if not then download HWINFO64 and on the large window on left side, expand motherboard and find ME area, inside that get the ME Firmware version.
Once you have that, go to this thread and in the section "C" download the matching ME System Tools Package (ie if ME FW version = 10.x get V10 package, if 9.0-9.1 get V9.1 package, if 9.5 or above get V9.5 package etc)
Intel Management Engine: Drivers, Firmware & System Tools

Once downloaded, inside you will find Flash Programming Tool folder, and inside that a Windows or Win/Win32 folder. Select that Win folder, hold shift and press right click, choose open command window here (Not power shell).
At the command prompt type the following command and send me the created file to modify >> FPTw.exe -bios -d biosreg.bin

Right after you do that, try to write back the BIOS Region dump and see if you get any error, if you do show me image of the command entered and the error given >> FPTw.exe -bios -f biosreg.bin

* Edit -

@dustbrother if your system is modern enough to have USB Flashback, I have to assume you probably mistakenly flashed the stock BIOS with EZ flash, modern EZ flash never allows mod BIOS flashing.
If you meant Ai Suite trick method, I've never seen that work, nor have I personally been able to make it happen. Rarely seen anyone show success, usually either fail outright or it appears to work but only stock BIOS or nothing was actually flashed

Your BIOS is inside "unsigned" capsule, this is why it would not flash with USB Flashback. Here, I fixed it, now you can flash it with USB Flashback
http://s000.tinyupload.com/index.php?fil...449832225952251