Easily Downgrade PSP Slim & Enable CFW

Note: This tutorial is NOT for PSP 2000 with TA-088v3 motherboard.

This tutorial/guide will help you to:

  1. Make a Pandora Battery (without using another downgraded PSP), and convert it back to normal, or use a Pandora as Normal battery using PSP Grader.
  2. Downgrade PSP Slim from ANY Official Firmware (I tested it @ OFW 5.51 & it worked fine :D )
  3. Install Custom Firmware 5.00 M33-4, then upgrade to 5.00 M33-6 (upgrade is optional)

Stuff you’ll Need

  • PSP Slim/PSP 2000 (but not TA-088)
  • A battery (should NOT be the new ones, they are Pandora proof)
  • Extra battery, if you don’t plan to convert the pandora battery to a normal one
  • MemoryStick of at least 64MB, not more than 4GB
  • Mini USB Cable or Card Reader to put files on the MemoryStick
  • Knife/Blade, Safety Pin/Needle
  • AC Charger/Wall Charger
  • Conputer with an internet connection (internet connection required for Downloading)

Files to be Downloaded

To make things easier, and to avoid confusions, we will do it all step-by-step…

  1. Make a Magic MemoryStick
  2. Make a Pandora Battery
  3. Final Transformation ( from OFW to CFW :P )
  4. Upgrading to CFW 5.00 M33 – 6 (Optional)

Note: If you don’t follow the steps correctly, you’ll end up with a BRICKED PSP.

Make a Magic MemoryStick

  • Extract PSP Grader and Run it.
  • Connect the PSP to the PC via a Mini USB Cable or put the MemoryStick in the Card Reader and connect it to the PC. PSPGrader will automatically detect it. Target it if it doesn’t.
  • Check the option “Format Memory Stick

    Check "Format Memory Stick"
    Check "Format Memory Stick"
  • Then after that, click on “Create Pandora Stick”, (the last button on the right).
  • It will now do all the required processes and will finally copy the files, this will take some 5 minutes.
  • Magic Memory Stick is now ready!

Make a Pandora Battery

  • Take your knife/blade and open up the battery. Be cautious while doing that, make sure that your tool dosen’t harm the internals of the battery as well as your hands.
  • After it is opened up, look for a connector labelled “IC04” or “C04” (depends on your battery).
  • Take your Safety Pin/Needle and slightly lift up the leg at the bottom of the right side of that chip, to avoid cutting the opposite side of the leg, check whether you are holding the chip correctly (there will be code written on the chip, use it to check the correct? position).

    PSP Slim Battery IC04 Connector
    PSP Slim Battery IC04 Connector
  • For a PSP Slim S110 Battery, instead of lifting up the leg or cutting it, you can cut the PCB line that connects to that leg.

    PSP Slim S110 Battery | Cut the PCB Line
    PSP Slim S110 Battery | Cut the PCB Line
  • That’s it, put back the battery cover and glue it or use a tape or just leave it like that (your wish :P ).

If you have done it all right, the Pandora Battery is ready! Remove the MemoryStick from the PSP and insert the battery, if the PSP starts by itself, then you can be sure that it’s Pandora!

Final Transformation (from OFW to CFW :P )

  • Plug in the AC Charger (but don’t insert the battery), & start your PSP, while the PSP is on, put in the pandora battery.
  • Check the battery’s charge level (->Settings->System Settings->Battery Information), if it is below 78%, turn off the PSP and let it charge.
  • If you have to check the charge level, don’t try to directly turn on the PSP as it is having the Pandora Battery. Repeat steps 1 & 2 if you have to be sure about the charge level.
  • Now, keep away the AC Charger, we’re ready to roll!
  • Insert the Magic MemoryStick and keep the Left Trigger pressed and then insert the Pandora Battery. As soon as you insert the Pandora battery, the PSP should start by itself.
  • A menu will load up shortly, with many Options. One option of these will be “Install Custom Firmware”, go to it and press “X“.
  • Now you don’t need to do anything, except waiting for the Installer to do the flashing.
  • After it is done, you’ll need to press “X” to restart your device. Now go to System Information (“Settings->System Settings->System Information”), you will see System Software 5.00 M33-4 !

    CFW 5.00 M33-4
    CFW 5.00 M33-4
  • Congrats!! Your PSP is downgraded!!!
    Now remove the Pandora battery and insert the normal one, or just convert the Pandora back to normal by pressing the leg down so that it goes to its normal/previous position or solder the PCB line (whichever step you had taken, just revert it) :D
    Or you could use the PSP Grader to use a Pandora as a Normal Battery, in PSP Grader, select the second option “Inject IPL Only“.

You are currently having CFW 5.00 M33-4! :)

Upgrading to 5.00 M33-6

  • To Update it to CFW 5.00 M33-6, you need this file: CFW 5.00 M33 – 6.
  • Format the Magic MemoryStick (->System->System Settings->Format Memory Stick).
  • Extract the downloaded file & copy the folder “Update” present in it, to “PSP\Game\” on the MemoryStick.
  • Now run the Update on the PSP, it will be there in “Game“.
  • Follow the instructions, after the update, you’ll be having 5.00 M33-6 :D !

There’s nothing wrong in dropping down a comment below! Comment Please!

And yes, the two pictures of the battery above don’t belong to me, I don’t know who has given out those pics, if you know it then please do inform me so that I can give them credits :P

Be sure to contact me if you face any problems!

49 Replies to “Easily Downgrade PSP Slim & Enable CFW”

  1. Pingback: Easily Downgrade PSP Slim & Enable CFW | Hacker's Lane | Hack In The Box
  2. My PSP is PSP slim 2003(color Piano Black), can it be downgraded from OFW 6.20? I accidentally upgraded it. When I bought it it had CFW 5.00 M33-4.

    1. Thanks :) I did cover my MAC address, but I carelessly uploaded the uncovered image rahter than the edited one :P But it doesn\’t matter as one guy replaced my motherboard with another one, he replaced with TA-088 v3. I cant hack it as I skipped ChickHEN requirements :/
      So it doesn\’t really matter now… :)

  3. I did everything smoothly, even able to Upgrade 5.00 M33-6. But after few turn ons and offs, the screen went blank when I turned it on again, with the power light still on. what happened? did my psp brick? what can I do?

  4. urgent!i need a big help!i haved upgrade by online with my psp2000 become nw version 6.38!i can play all the hack games…:'(!!need u help it….how to downgrape by the simple ways……pls give me hands….

  5. What happens if I don’t replace my Pandora battery with a normal battery? Also I don’t have a soldering iron will pencil lead work?

    1. If you don’t replace, it will keep booting into service mode, every time you start your PSP. You’ll have to start with charger and then insert Pandora to start it normally. :)
      Pencil lead, yeah you might try it. It should work.

  6. I have to express my respect for your kind-heartedness for persons that require help with that field. Your personal dedication to getting the solution around had been rather beneficial and has really encouraged women like me to arrive at their aims. The useful recommendations signifies so much to me and further more to my office colleagues. Thanks a ton; from everyone of us.

  7. ive cutted that pin.. and the pcb also….and still not working… its starting normal that green led when i acting the power button. it`s a 2004 PSP and it`s bricked because of a corrupted plugin.

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