bios vs budget build

hi,

so i got a asrock 970 3.0 version 1 and a fx 4300, however i have learned that the processor should work once bios is updated. Howver, it occurred to me that the processor might not work as bios not up to date at beginning.
so, anybody know if i run it will it work? willl it give me chance to updqte bios? or do i have to put in a lesser cpu, update bios then install new cpu?

thanks