Requirements:
Awesome update finder
PS3 on CFW
A USB
Winrar

What to do:
-First go find 'awesome update finder'and download it.

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-You are going to want to extract both the .exe and the folder to your desktop

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-This is the part which may get a bit tricky for you. In order to find the update for the game you would like to update you need to enter the GAME ID into the search bar above. If you do not know the GAME ID you can go into MultiMan and the GAME IDs are located underneath the game Title. Or you could always google for the GAME ID

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-After you type in the ID hit fetch and all of the game updates should pop up.
-Go to the latest update, or the one you would like to download and copy the URL

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-Paste the URL into your address bar and it takes you to a direct download of the file.
-Save the file to your desktop and place it in the root of your USB.
-Plug the USB into your console and go to install packages.
-Install the package and Viola! the game has been updated