How important is it to brought up to date?
The only time you should ever really update your BIOS is:
A) If there is a major issue, with the update being a known solution
B) If a major feature is implemented in the newer version
C) Well, there really isn't a C.
Messing with your BIOS can be very tricky, even if you get the update straight from the manufacturer's website. To me, changing the BIOS is a last option kind of thing.