Jail breaking, or implementing a JTAG mod, on your console allows you to play home brew software and hack your video game library. Hooking up a JTAG mod on the PS3 is simple when done as a soft mod (flashing the software) rather than as a hard mod (rewiring the console). Owners of PlayStation 3 consoles with 3.55 firmware can use a USB flash drive and a few downloaded files to JTAG their PS3 and enjoy hacks in games such as "Call of Duty."
Insert the USB into the computer. Open the USB folder from "Computer" and create a folder in the USB root and name it "PS3." Create a second folder and name it "Update."
Download the jailbreak ZIP file. Once downloaded, extract the folder to "PS3UPDAT.PUP." Move "PS3UPDAT.PUP" to the "Update" folder you created on the USB drive.
Insert the USB flash drive into the PS3. Go to "Settings" and select "System Update." Update via "Storage Media" and click "OK" on "Version 3.55-jb." Accept the terms and conditions and install the update.
Wait until the PS3 beeps four times and shuts down, then power the PS3 back on via the console button.