I would need help in confirming the right CU10 patch for SQL Server 2008 R2.
Download SQL Server 2008 R2 CU10 file from Microsoft site using the following link - http://support.microsoft.com/kb/2908087. Once you enter the link, you see multiple download options. Please select the following one - SQLServer2008R2_SP2_CU10_2908087_10_50_4297_x64