Error while trying to restore bak file in Sql Server management Studio.

I am facing Error while trying to restore bak file in Sql Server management Studio. Sql Server version: ============== Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (Intel X86) Mar 29 2009 10:27:29 Copyright (c) 1988-2008 Microsoft Corporation Express Edition on Windows NT 6.2 <X86> (Build 9200: ) Error Details ========== [login to view URL]: The database was backed up on a server running version 10.50.4000. That version is incompatible with this server, which is running version 10.00.2531. Either restore the database on a server that supports the backup, or use a backup that is compatible with this server. ([login to view URL])