WP7 Changing Tile elements using code

Is it possible to change the tile background image through code. The scenario is "The initial tile image(not the default image, I have created my own image and set it as the Background开发者_JS百科.png under tile options) is updated with a new tile background image through pushing a Tile notification and when the user opens the app(either activating or launching) I have to change the new tile background image which was updates through push notification to the initial tile image". Is this possible?

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In 7.0, just have your app call your notification server to send a new tile notification.

In 7.1 you can use ShellTile.ActiveTiles to access the tile and update it.