Microsoft has just updated Windows Service Pack Blocker Tool Kit for Windows 7 SP1 that has been made available via Microsoft Download Center.

Windows Service Pack Blocker Tool Kit temporarily prevents installation of Service Pack updates through Windows Update that is valid for 12 months following general availability of the service pack.

This toolkit contains three components.



A Microsoft-signed executable creates a registry key on the computer on which it is run that blocks or unblocks the delivery of a Service Pack to that computer through Windows Update.
A script does the same thing as the executable, but allows you to specify the remote machine name on which to block or unblock delivery of Service Packs.
An ADM template allows administrators to import group policy settings to block or unblock delivery of Service Packs into their Group Policy environment. Administrators can then use Group Policy to centrally execute the action across systems in their environment.

Download: Windows Service Pack Blocker Tool Kit