This is critical. The legality depends entirely on you use the file.
Q: Can I play PS3 games on my PC or mobile device? A: Yes, you can use a PS3 emulator to play PS3 games on your PC or mobile device. Download Ps3 Games Pkg Files
Enter your PS3's IP address and connect (leave port, username, and password blank). Navigate to dev_hdd0/packages on your PS3. Upload your large PKG files directly into this directory. This is critical
Many PKG files require a accompanying .rap file to be activated. These should be placed in a exdata folder on the root of your USB drive. Package Manager: Installed on your jailbroken console. How to Install PKG Files on PS3 (Step-by-Step) A: Yes, you can use a PS3 emulator
License files needed to activate many digital PKG games. Prerequisites: Preparing Your PS3