Disclaimer: Jailbreaking your console may violate Sony's Terms of Service. Proceed at your own risk.
An excellent resource for tutorials and understanding the HEN environment. ps3 hen games pkg
This comprehensive guide covers everything you need to know about PS3 HEN games in PKG format, including what they are, how to install them, and how to optimize your setup safely. What is a PS3 HEN PKG File? including what they are