[OFFER] Asus P9X79-E WS NMVe, ROM, EFI & microcode updates BIOS/UEFI version 1704

BIOS/UEFI Modding Offers: Already modded special BIOSes
4

These are “mod” files, off course it fails, Asus/AMI firmware prevents it due to firmware security, nothing new and expected.
This one seems to be an exception using the embedded EZ.

[Guide] How to flash a modded AMI UEFI BIOS - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)