Instructions
Turn on your PlayStation 3. Navigate to "Settings."
Navigate down to "Network Settings" and press "X."
Choose "Internet Connection" and press "X" to ensure it is enabled.
Insert the "Fallout 3" game disc. Navigate to "Games" and press "X." You will be notified that there is an update available for the game.
Highlight "OK" and press "X" to download the patch. The game will restart when the download process concludes, and you will see a message that states the game is loading Trophies.