i tried to use amibcp and set under setup pages the access/use to user .... but flashed and didn't work ...
help
update 2: since after modifying the backup above with AMIBCP, (where I tried to set the access level to "USER" for "Main" "Advanced" "Chipset" "Boot" and "Save & Exit" pages under setup) didn't work, (at least nothing changed in bios.... i could only see only the normal "narrowed" original pages), i thought the smart thing to do is to flash back the stock rom from asus page, did not downgrade, just used "Winflash.exe /nodate" to flash the same 307 ROM.
P.S. got a GbE error in yellow while writing the BCP modified version,
so back to square 1.
HWiNFO64 reports Intel ME Version: 11.8, Build 3399, Hot Fix 50
will make again a Bios Region backup with flash programming tool (FPT) from Intel CSME System Tools v11 r24
aaaaand here it is: https://drive.google.com/open?id=1UMeK4PS_KTbe4StvJcuhfVr4pRlGHIkm
(>.>)