BTW at one point I know I had the official update installed but currently am running a 4.3 rom.
Its radio dependant. Not rom / bootloader dependant. Just download a 4.1 radio and the menu options will be available. I was on 4.3 JediX and only downgraded the radio. Worked well for me. If you need the radio let me know and I'll upload it when I get home.
Also Darkshado is correct. You can't downgrade the bootloader. You're better off on the 4.3 loader anyway. Much less hassle as far as WiFi / signal issues go ( flashing different kernels....patching bootloaders... using using selinuxmode changer etc ).