At this time, Vista's SP1 is only being released for English, French, German, Japanese and Spanish(traditional). Unfortunately, I don't see that your post mentioned which languages you have installed other than those mentioned.. If you happen to have a language on the computer which isn't supported, then it won't install. You might try uninstalling the unsupported language...or....
Later releases will include other languages..
...And since SP1 didn't show up in Windows Updates, did you visit the Windows Updates site and install all the listed hardware driver updates for your 64 bit machine?
Hope this helps.
Service Pack 1 never showed up in my Windows Update, so I attempted to download the version for 64 bit Vista manually. A message appeared saying I did not have the languages installed that I needed to download the service pack. I installed from Windows Update the English, French, German, Japanese and Spanish language packs, then tried again. This time I got the message "Windows Vista Service Pack 1 cannot be installed on your computer because the language of Windows Vista you have installed is not supported or you have installed a language pack that is not supported. Windows Vista Service Pack 1 can only be installed on computers running the English, French, German, Japanese and Spanish versions of Windows Vista or computers running only those language packs."
Please can anyone advise me on what to do next?
I have a 64 bit computer with Vista Ultimate.
Thanks, Mary T