https://support.microsoft.com/en-au/topic/kb2659694-cumulative-update-package-5-for-sql-server-2008-r2-service-pack-1-c7417f0d-7ab1-f077-4d38-33d67ea01e7c
KB2659694 - Cumulative update package 5 for SQL Server 2008 R2 Service Pack 1 - Microsoft Support
Describes cumulative update package 5 for SQL Server 2008 R2 Service Pack 1.