Here's a guide on how you can update your games on PlayStation:

1. Open the menu of the PlayStation console.
2. Navigate to "Library" and select the game that needs to be updated.
3. Press the Options button on the controller while having the game selected.
4. Choose "Check for Updates" or "Update" if available.
5. If an update is found, select "Start Update" and follow the on-screen instructions to update the game.

It is important to make sure that the console is connected to the Internet to check for and download updates. Also, please make sure that your console has enough memory to download and install the update.