[REQUEST] ASUS ROG Mothership (GZ700GX) ) Unlock Advanced Features

I bought gz700gx this time and checked 303 bios. (latest bios)

But you can set it up with xtu, but Bios has limited access to the advanced part.

So to solve this problem, I'm using AMIBCP.
I set my access to SUPERVISOR and updated it through EZFLASH 3, but ADVANCED didn't show it. So I would like to ask for advice to solve this problem.

Let me list the things I've tried.

1. Biosupdate via ASUS EZFLASH
(I modified the original 303 file through AMIBCP and replaced it with a BIOS flash supported by MYASUS. But the part I modified didn't work.)
(In EZFLASH in Bios, the phrase SELECTED FILE IS NOT UEFI BIOS appears and it doesn't work.)

2. Modification and flash through AMIBCP
(This is where the authority was modified so that it can be seen, and this is where all the attempts are made. I failed to flash here, too.)
3. Flash via FPTW64
I got error code 301 from here.
ERROR 301: Protected Range Registers are currently set by BIOS, preventing flash access.)

But when I saw the other threads (never found the link), I don't know if it was a SECURE BOOT with gigabytes or a BIOS GUARD, but I think I have to turn that off.

I don't know exactly what it is, but... I hope this will help.

Thank you for reading and I'll be waiting for your reply.

p.s i attached bios.

link 1 : https://drive.google.com/file/d/10WuOd5q...sp=sharing  (google drive)
link 2 : https://www.asus.com/au/Laptops/ROG-Moth...Desk_BIOS/ (official download)

link 1,2 is same file.