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

1. Open the menu of the Xbox console.
2. Navigate to "My Games and Apps" and select the game that needs to be updated.
3. Press the Menu button on the controller while having the game selected.
4. Choose "Manage Game and Add-ons".
5. If an update is found, select "Start Update" and follow the on-screen instructions to update the game.

Alternative

1. Open the menu of the Xbox console.
2. Navigate to "My Games and Apps" and select the game that needs to be updated.
3. Select "Manage" and click on "Updates".
4. Add the desired update to the queue.

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.