A BIOS does not become obsolete. Sometimes there may be a problem with one and an update is quickly issued to correct a specific problem, but they don't just become obsolete. Yours may be perfectly fine.
My BIOS was obsolete, HP drivers are ok but would be nice if i didn't have to find that out by my self.
No point of contacting HP support, after you buy it you can hang your self, they don't care.