ok so i was downloading a game a could not anywhere find the game update file which is required for all games of 3.55 now adays so i researched in on finding the update pkg and found a program Game Update Finder

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How to use
1.Find out the BLES/BLUS you are searching for
2.Copy+Paste it in the search bar and click retail server..
3.Now it is important that you have to find the right update like 1.01 or something because the some game updates block access to 3.55 use...
4.There will be a bar that has the link copy+paste that into a browser..
5.Install the pkg to your 3.55.

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(And also it says at the side of the update info what ps3 update its available on.)

NZHawk delivers more of the good stuff: Awesome Update Finder v0.10. Download it, install it, and enter a game id -- returned are the update URLs for whatever game. Handy if you're scared keeping your hacked PS3 connected to the Internet; just copy & paste the URL, download the PKG, and install it through the XMB menu item.