[HELP] Unlocked AMI 4 UEFI Menus

My motherboard is the GIGABYTE GA-990X Gaming SLI., and I am able to open the (extracted) .F1 file with AMIBCP v4.55.
I would greatly appreciate it if somebody was able to unlock the hidden menus for me, and if not all of them, just ‘Setup Prompt Timeout’ (If it cannot be shown in the BIOS itself, please set it to 0), and also link a suitable guide to flash it (preferably without DOS)
Even better, is it possible to simply ‘log in’ as the extended user / supervisor without use of any mod?
Another question: Would I be able to recover from a bad flash / mod with the Dual BIOS feature of my motherboard?
Thanks in advance,