Things You'll Need
Instructions
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.