Hi,
As new Live Update Engine (LUE) content management technology is introduced with SEP 12.1, Live update is integrated with SEP 12.1.
LUE is a new feature introduced into Enterprise products with Amber (Symantec Endpoint Protection 12.1) in 2011. In SEP 12.1 clients, LUE replaces the traditional Windows Live Update (WLU) processes, files, directories and so on that were used in SAV and SEP 11.
Running Live Update for SEP 12.1 will update only SEP materials. It will not also download updates for all the other Symantec products on the computer, as SEP 11 did.
NOTE - The Symantec Endpoint Protection Manager (SEPM) still uses a Windows LiveUpdate client to download its materials from internet LiveUpdate servers (or from an internal LiveUpdate Administrator 2.x server). The SEPM with a SEP 12.1 client will have both the WLU files (LuAll.exe, LuComServer_3_3.exe, LuCallbackProxy.exe, LuConfig.exe) and LUE libraries (LuEng.dll, LuSvc.dll, LuCtl.dll, LuSub.dll).