Things You'll Need
Instructions
Go to the "Game" menu on your PS3 user interface once the PS3 has booted up. Go to the "Game Data Utility" feature on this interface.
Press the triangle button on the controller. This will show you all of the options that you have when it comes to deleting certain files within this folder.
Choose the "Information" button on the screen to view the size of the files you're going to delete. Look at the size field on the screen.
Select the "Delete" option from the drop-down menu. Click "Yes" to confirm that you want to delete the files from your PS3.