symantec 12.1 ru2 manual updating

hi virus fighter's

1st sry for my english

plzz help me

How to update Symantec Endpoint Protection 12.1 ru2 manually by copying update file from a updated endpoint ?
 

i copyd files here C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\12.1.2015.2015.105\Data\Definitions\VirusDefs
here also C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\CurrentVersion\Data\Definitions\VirusDefs
 

not working