Upgrade the Desktop software or the software on the BlackBerry?
And where can I obtain it? I know where to get the Desktop software but the BlackBerry software that goes on the BlackBerry Ive never been able to find :(
You need to update the software on the BlackBerry itself.
Find Mark's Sticky Thread on how to upgrade to 4.0; it has detailed instructions on where to get the software, from the carrier, and how to upgrade your BB.