As an AMD owner you shouldn't use Apple Software Update for updating anything to do with the OS itself (at least for now...).

It's best to use Zeph's AMD Software Update as this patches CPUIDs and removes any dangerous kexts etc that might harm your system.

Marvins is used for patching post installation.

Instructions on Marvins:

http://forum.insanelymac.com/index.p...4s+AMD+Utility

http://forum.insanelymac.com/index.php?showtopic=78434