PS3 Jailbreak 4.20 CFW
PS3 Jailbreak 4.20 CFW
PS3 Jailbreak 4.20 CFW
PS3 Jailbreak 4.20 CFW

Let's Jailbreak PS3 4.20 and how can it be used to:

STEP 1: Plug a USB stick into your computer
STEP 2: Create a folder in the root of the USB stick called PS3
STEP 3: Create a folder inside the PS3 folder called UPDATE
STEP 4: Download PS3 Jailbreak 4.2 CFW
STEP 5: Move PS3UPDAT.PUP to the directory UPDATE that you just created on the USB stick
STEP 6: Plug the USB stick into your PS3
STEP 7: Navigate to Settings Tab
STEP 8: Choose System Update
STEP 9: Choose Update via Storage Media
STEP 10: It will say it found Version 4.20-jb
STEP 11: Choose OK
STEP 12: Accept Conditions and Install Update
STEP 13: After less than a minute, your PS3 will update, beep 4 times then shut down.
STEP 14: Power up your PS3 (You will have to do it on the console and not by the controller)
STEP 16: Your PS3 is now jailbroken!

PS3 Jailbreak 4.20 CFW