You can directly upgrade your either Fat or Slim PSP with this magic battery and magic card package by simply inserting both to your PSP. NO downgrade to 1.5FW is need anymore, just press "X" for 3.71 M33-2 version.

    How to Use The Pandora Battery:

    1. Turn your psp off if you`re using it.
    2. Insert the Memory card you made for repair / downgrading.
    3. Insert the Pandora`s battery.
    4. when the program loads, press x

    This will begin the Repair / Upgrade (Downgrade)
    To eliminate a question i`m predicting, this procedure WILL patch key 5 if you have TA-082 or higher, so it`s safe to downgrade.

     Restoring the Pandora Battery to Normal: why, oh why???

     1. Remove battery from PSP.
     2. Remove memory card from PSP.
     3. Plug in PSP Power Cord (wall charger)
     4. Turn on PSP.
     5. Insert Memory card and battery.
     6. Go to games and run the pandora`s battery creator program.
     7. Once the program loads, press L and R.
     8. Program will exit, turn off PSP.
     9. Remove battery.
     10. Remove mem card.
     11. Insert battery.
     12. Turn on your PSP, you`re done