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?

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.