How to bypass bios firmware protection?

Question

BIOS

Hello.
I decided to install in my old asus p8z77-v lx nvme SSD drive via pci-e. It turned out that the mother (or rather uefi) does not support booting the system from pci-e. And I decided to google the solution.
It turned out that the solution to my problem already exists and there are a lot of instructions on the Internet. In short, you just need to modify uefi.
Here is an example of such a solution:
https://sampawno.ru/viewtopic.php?f=120&t=13431#p14889

The problem occurs at the stage of flashing with a modified version of uefi.
If flashing through afuwin error: "18 - Error: Secure Flash Rom Verify fail"
If through from under UEFI using the built-in EZ Update utility: "Security Verification Failed"
There is no BIOS Flashback function on my mother.
BIOS version - 2501, downloaded from the site.
The modified file was created on the basis of the same file.
All tips from here https://www.win-raid.com/t455f16-Guide-How-to-flas... did not help.

Can this problem be solved?

Answer 1

The simplest thing is to purchase a CH341A programmer and flash it in hardware.
Software options that can theoretically work:
- Run Intel FPT from under Windows
- Run Intel FPT from under UEFI Shell and flash it
- Use the Chipsec utility to check possible ways to write and bypass checks. For example, there is an interesting trick with modifying the S3 Boot Script and putting it to sleep.