PS3 Jailbreak 4.31

How to install Jailbreak CFW on   4.31, 4.30, 4.25, 4.21, 4.20, 4.11,  4,00, 3.73, 3.66 to 3.55

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Notice: You DON’T need Flasher (E3 flasher, progskeet) You need only USB Stick with minimum capacity 256mb.
Instructions:
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 PUP Updated
STEP 5: Unzip PS3UPDAT.PUP
STEP 6: Move PS3UPDAT.PUP to the directory UPDATE that you just created on the USB stick
STEP 7: Plug the USB stick into your PS3
STEP 8: Navigate to Settings Tab
STEP 9: Choose System Update
STEP 10: Choose Update via Storage Media
STEP 11: It will say it found Version Downgrade
STEP 12: Choose OK
STEP 13: Accept Conditions and Install Update
STEP 14: After less than a minute, your PS3 will update, beep 4 times then shut down.
STEP 15: Power up your PS3 (You will have to do it on the console and not by the controller)
STEP 16: Your PS3 is now on CFW !
Work on All models slim and fat.
100% tested works!