Installing a PKG file on a PS3 is a straightforward process, but it requires your console to have Custom Firmware (CFW) or HEN (Homebrew Enabler), as official firmware does not allow the installation of unsigned packages from a USB drive. Here is how to do it.
Your console must have CFW (like Evilnat) or PS3HEN (Homebrew Enabler) installed and activated. fifa 13 ps3 pkg
Click on the FIFA 13 PKG file and wait for the installation progress bar to hit 100%. Modern Community Mods and Squad Updates Installing a PKG file on a PS3 is