Hey.
My Computer is a Packard Bell iXtreme9600. How do I know which BIOS updates to install. Packard Bell support site has two that are for my system:
Diego S BIOS Update.
Diego BIOS Update.

How do I know which has been developed for my Motherboard??

is your machine running OK?
you shouldn't realy need to update the BIOS.

if you try flashing the BIOS and it doesn't work properly you'll have a nice doorstop