No! Update, you only need the one from the top of the list, none of the others.
Regardless of what ASUS says, UPDATE THAT BIOS.
All ASUS means is the system does'nt need updating when you are only using the PC for what it is, not for when your Overclocking.
It says in the manual how to update your BIOS using BIOS EZ-Updater in the BIOS (Not in Windows, don't take the risk of corrupting your BIOS, always do overclocking and BIOS Updates through BIOS it self)
Put it this way, if you left the BIOS version as you have currently, you may not be able to get any sort of decent Overclock, stable system or you may not even be able to get to 3.0ghz at all.
Do the reasearch and make sure that you have everything up to date, BIOS, windows, graphics, chipset, etc, etc.