I would like to have a custom BIOS where I can enable/disable HPET if that is possible.

Newest version 1302:

Thank you! :slight_smile:

@TuGuX - do not rename BIOS, flash via USB Flashback, do not flash via Intel FPT - http://s000.tinyupload.com/index.php?fil…904947165060332
New settings visible at Advanced >> PCH Config (Enabled settings >> HPET and SPD Write)
If you cannot get flashback to work, we can flash via FPT, but first I need backup BIOS region from you to edit so you don’t loose serial, UUID, DTS keys etc, and we’ll have to disable BIOS lock via grub/setup_var

That was fast!

Unfortunately, I did not really understand what you have said as I don’t have that technical knowledge in terms of custom bios.
I am updating the BIOS normally via USB.
So do you want me to update it right now via USB without changing the name of the file?
Where can I get that backup BIOS region?

Thank you a lot!


USB -> going into BIOS and choosing the USB stick with the bios file in it

As far as I have seen, I don’t have Flashback on this board (just putting USB stick into USB slot and pressing the flashback button)

@TuGuX - You’re welcome! Sorry, I always assume people asking for mod BIOS at least know some about using modified BIOS.
You have to use USB Flashback to flash modified BIOS, and yes that needs to be done a certain way (FAT32 USB, file on root of USB, special name for BIOS which I set already)
Here’s Asus Guide’s on how to use USB Flashback

If your board does not support USB Flashback we’ll have to do some technical stuff before you can flash modified BIOS.
In that case, please check main page of BIOS and give me your ME FW version, if you do not see it there, download HWINFO64 and then on large window on the left, in motherboard section, expand and find ME Firmware version and let me know.
Then I can further guide you through the rest of the process, it will be a little involved, so get ready . Sorry, I am leaving shortly too, so may not be able to get back to you until later tonight.
Here is the general process of what we will need to do
[GUIDE] Grub Fix Intel FPT Error 368 - BIOS Lock Asus/Other Mod BIOS Flash

And here is the thread, in section “C” where you get Intel ME System tools package for your ME version, that includes the FPT we will use.
Intel Management Engine: Drivers, Firmware & System Tools

If you get this far, make a FPT backup as guide says, and upload that for me to edit, DO NOT use above file with FPT make backup and upload for me to edit, then wait.

No flashback on my mainboard, so we have to do all these steps you have mentioned.
Thank you for your help, we could even do teamviewer.

For the ME Version, I got this one: 11.7 Build 1229
ME FITC Version: 11.6 Build 1126

EDIT: Downloaded this one for the ME tools: Intel CSME System Tools v11 r19 - (2019-01-10)

@TuGuX - that’s the package you need. Make a backup and send to me for editing >> FPTw.exe -bios -d biosreg.bin
Then get grub all setup, and if you can’t follow my guide to get the variables you need, I’ll get them for you once you send me your BIOS region dump from above command.

@Lost_N_BIOS I used the tool and used CMD for FPTw.exe (used WIN32 - not WIN64 - I hope that’s right) and created the bios region dump with the given command:

I hope everything is correct.

@TuGuX - Thanks, and yes that is correct. Here is your BIOS lock variable >> 0x90C

Use that with above linked Grub guide, rename the efi file >> Shell.efi

Then start at step #6 and once you get to the grub prompt type the following to unlock BIOS Lock >> setup_var 0x90C 0x0

Here is your modified dump, flash back after you are done with the above using FPT with this command >> FPTw.exe -bios -f biosregm.bin

@Lost_N_BIOS - Thank you a lot, it worked flawlessly, I can configure it how I want to.
I was sure that I was not able to do this until step 6. It was very confusing to me.

Appreciate it, glad that you are here!

@TuGuX - You’re welcome, and thanks for reporting back all is working properly!
So steps #1-5 were confusing to you, do you think it’s because of how I wrote them (confusing, or need more details etc), or was it due to simply being unfamiliar with the tools/BIOS editing etc?

Does HPET control now fix the issue you were having? Hope so!

More that I am unfamiliar - but I did not really understand how to find the right GUID as I have looked into it myself (saw many but did not find the right one through ‘text seach’).

I wanted to be able to disable it in order to test the result in CS:GO.
Did not test it yet in an official match, will report later.

BIOS lock (Unicode) text search should have taken you to the correct GUID, maybe I need to clarify that in the guide, I think sometimes it’s regular and other times Unicode.