Before anything else, something is wrong in your BIOS and revision number.
For the 990FXA-UD3 rev. 1.0, AND rev. 1.1, the BIOS numbers go from F1 to F6.
ONLY revision 1.2 has letters after the "F"., ie FA, FB, FC.
You need to double check your revision and BIOS.
I know this because I have ALL three revisions in my basement machines and I have to double check very carefully before I update
the BIOS on any of them. ( I also have a 990FXA-UD5 rev. 1.0 and a 970A-UD3 rev. 1.0 , so I am VERY carefull ).