how to Update sql server 2012 step by step on windows server 2012

Updating SQL Server 2012 for Configuration Manager 2012 R2

The Following are the steps to Update SQL Server 2012  (x64 Bit).
Download SQL Server 2012_CUMUpdate2
Open the SQL server folder, run the setup as administrator.
Click on Install
 
  Note : Turn On Your Internet Connection, --For any Updates.