Windows 7 SP1 not appearing in Windows Update

Hi all, Windows SP1 has been out for quite a while, but despite this, Windows 7 SP1 refuses to show up in Windows Update. I have unhidden and installed all hidden updates and followed all steps (apart from step 6) on this Windows help site: You do not have the option of downloading Windows 7 SP1 when you use Windows Update to check for updates (http://support.microsoft.com/kb/2498452) I...