GLOSSARY Glossary of PS3 Jailbreak Terms Backup To install a game to either internal or an external USB hard disk to enable lauching without the disk CFW Custom Firmware. More specifically this is usualy refering to Modified Firmware based on Official Firmware Jailbreak To remove limitations placed on hardware (in this case the Playstation 3) in regards to running code. OFW Official Firmware as released by Sony. PKG Package files that can be installed on a Jailbroken PS3 using the new Install Packages menu item. These can be anything from emulators to backup managers. PUP Playstation Update Package. Update file for the PS3 which can be CFW, MFW or OFW Recovery Mode Low level PS3 recovery menu built into all consoles. XMB Cross media bar. The built in menu system on the Playstation.