PKGView is a tool for extracting files from PS3 PKG. Tool is 100% legal it contains no code Sony. PKGView also has a graphical interface that simplifies the extraction of both individual files and the complete package.
PS3 PKGView v1.2 Extractor Homebrew Application Version 1.2 Changelog:
FIX: Still failing to extract large files.
FIX: Structure parsing issues.
FIX: Other extraction issues.
More descriptive extraction window.
Optimized extraction of retail pkg.
Now creates an extraction log.
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if you are refering to the games/themes/demos and addons here then no. as you still need to have payed for them with your psn account 1st. i doubt there will ever be a way to make content from the above link active on the system the .pkg is installed on you can install them but they won't work.
It's funny to see how people are ungrateful. ifcar0 is one of the people that code nicely and have experience with PS3, so why instead of trolling say simple Thank You for what are doing. Cause there are not that many people to move the PS3 scene.