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Upgrading an existing XNA Windows Phone Project to Windows Phone OS 7.1

The Microsoft Windows Phone SDK allows developers to target Windows Phone OS 7.0 or Windows Phone OS 7.1. Games that target Windows Phone OS 7.0 can use only features provided with that version. To add features to your game that exist in Windows Phone OS 7.1, you must upgrade the application.

Before you upgrade your project, you should back up the project files manually, since the migration tool does not automatically back up the project. Once upgraded, your project cannot be restored to Windows Phone OS 7.0!

To upgrade a project from Windows Phone OS 7.0 to Windows Phone OS 7.1

  1. Open the Windows Phone OS 7.0 project you want to upgrade in Visual Studio.
  2. In Solution Explorer, right-click the project to open the context menu, and click Upgrade Windows Phone Projects.

    This menu option will not appear if the project is already a Windows Phone OS 7.1 project.
  3. The Upgrade Windows Phone Projects dialog will appear. Click Upgrade to upgrade your project, or Cancel to exit the dialog without upgrading your project.

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