Remove patch examples: NOTE: You must run SetupPatch.exe from the cached uninstallation folder located at %programfiles%\Microsoft ...

Remove patch examples:
NOTE: You must run SetupPatch.exe from the cached uninstallation folder located at
%programfiles%\Microsoft SQL Server\100\Setup Bootstrap\Update\KBxxxxxx\QFE.

>> Remove an existing patch from a single SQL Server instance and all shared
   components.

   SetupPatch.exe /q /Action=RemovePatch /InstanceName=MyInstance

>> Remove an existing patch from all shared components only, like SSIS and
   Tools.

   SetupPatch.exe /q /Action=RemovePatch