Bios Mods -The Best BIOS Update and Modification Source

Hi,
I'd like to unlock the uefi of my laptop (Asus X751BP) to access the classic CPU overclock functions, same for the integrated graphics and eventually the RAM.
The file is too big to be attached but here is the link : https://www.asus.com/fr/supportonly/X751...Desk_BIOS/

Many thanks in advance !

I managed to modify what I needed to do, but now cannot find a way to flash back the BIOS...
It's an Aptio V, I tried removing the "capsule" header but with AfuWin I get a security check error. Any idea on how to flash a bios on such a platform ? (i.e. bypass the security checks ?)

I think you can refer to below link or consider to purchase a spi programmer. If it's an intel platform ,we could use fpt to read/write bios ,but about
amd platform ,it's a trouble.
https://www.win-raid.com/t455f16-Guide-H...-BIOS.html