Yes, but you must use HEN (Homebrew ENabler) rather than full CFW. The PKG install process is identical.
Jet Set Radio (also known as Jet Grind Radio in some regions) is a cult-favorite SEGA title known for its vibrant cel-shaded visuals, pumping soundtrack, and street-graffiti gameplay. The PS3 version is typically distributed through the PlayStation Store as a licensed digital title, but some users obtain PKG files for backup, reinstallation, or modding purposes. A PS3 PKG file is a package format used to install games, demos, updates, and DLC on the console. Installing PKG files requires either official signing (for retail/store content) or a PS3 environment that accepts unsigned packages (custom firmware or HEN-enabled consoles). jet set radio ps3 pkg install