Windows Vista Service Pack 1 RTM for both 32-bit and 64-bit edition of the operating system is available for download. Windows Vista SP1 x86 and x64 are available either as standalone packages or through Windows Update.
“Windows Vista Service Pack 1 (SP1) is an update to Windows Vista that addresses feedback from our customers. In addition to previously released updates, SP1 will contain changes focused on addressing specific reliability, performance, and compatibility issues; supporting new types of hardware; and adding support for several emerging standards,” reads a fragment of the Vista SP1 description.
The standalone version of Windows Vista SP1 can be integrated exclusively with copies of Windows Vista with these language versions: English (US), French, German, Japanese, or Spanish (Traditional).
Windows Vista Service Pack 1 for both 32-bit and 64-bit edition of the operating system is available for download here.