*Source: Microsoft (
http://www.microsoft.com/downloads/d...splayLang=en)*
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Windows Vista Service Pack 1 RC Refresh is available to Beta testers through Windows Update. Experience the WU installation path for Windows Vista SP1 by following these simple steps and give us your feedback to improve our quality.
Note: You must uninstall any previous versions of Windows Vista SP1 before installing Windows Vista SP1 RC Refresh
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