Windows Vista Service Pack 2 (SP2) and Windows Server 2008 SP2 is now available for free download on Microsoft Download Center, You can download Vista SP2 as a standalone installer or as ISO image for burning to DVD.
Service Pack 2 Overview:
Service Pack 2 for Windows Server 2008 and Windows Vista (SP2) is an update to Windows Vista and Windows Server 2008 that supports new kinds of hardware and emerging hardware standards, and includes all updates delivered since SP1. SP2 simplifies administration by enabling IT administrators to deploy and support a single service pack for clients and servers. Please see the Windows Server SP2/Windows Vista SP2 page on TechNet/MSDN for additional details and documentation.
Important – Your system must be already installed with Vista SP1 before installing Vista SP2.
Bellow the direct link to download Vista Sp2 standalone installer and Iso image file.
Download Vista SP2/Server 2008 SP2 32 bit: tinyurl.com/ondc3p
Download Vista SP2/Server 2008 SP2 64 bit : tinyurl.com/psoyuo
Download SP2 DVD ISO image : tinyurl.com/qejzqt