Sir…get the Asus bios file v2702, open your original dump with FD44 editor and transfer your mb data to the 2702 CAP file, now extract the Intel image with UEFI tool 0.28/0.25, save it as 2702.bin and program the IC.
Later update it to latest 3503 using USB BFB and in windows after correct ME Driver installed, manually update the ME FW to 9.1.40.1000, according the guide.
Job done and finished.
Nothing more to add as it’s the correct procedure for recovering this generation board/bios with a programmer.