SQL SERVER – Services Pack 2 for SQL Server 2008 R2 – Microsoft SQL Server 2008 R2 Service Pack 2 |

“you just have to download and install SP2 and there is no need to install SP1 as this service pack is cumulative SP and contains all the previous upgrades of SP1″ not exactly true – if you’ve installed latest CU for SQL Server 2008R2 SP1 you should wait

blog.sqlauthority.com