title: Downgrade mdf file from 661 to 655
body: <p>I created and database in sql server 2008. I took the mdf and ldf files to Visual Studio 2010 project and tried to connect to that db with entity-framework. and got the following message:</p>
  
  <p><img src="https://i.stack.imgur.com/IxoLV.png" alt="enter image description here"></p>
  
  <p>I cannot reinstall or upgrade the software on the specific computer.
  So is there any way to downgrade the version of the mdf and ldf files?</p>