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How to Downgrade PSP 3.71 to 1.50 Without Pandora Battery

With the introduction of Hellcat's Recovery Flasher, there is now no need to use a Pandora battery to downgrade your PSP software back to 1.50 Sony firmware. The Pandora battery puts the PSP into service mode, allowing you to downgrade that way. Hellcat's flasher does similar things but bypasses the need for the Pandora battery and magic memory stick all together. This makes the process much more straightforward. When it is finished, you will now have a PSP running the original PSP software that is used to play user-made games, called homebrew.

Things You'll Need

Sony PSP
PC
USB Cable
Hellcat's Recovery Flasher
1.50 Sony Update

Instructions

- 1
  Download the Hellcat Recovery Flasher. Copy the "Recovery" folder.
- 2
  Insert a memory stick into the PSP and connect your PSP to the pc with the USB cable. Access the PSP memory stick and open the "PSP" folder. There will be a "GAME" folder located inside.
- 3
  Paste the "Recovery" folder into the "GAME" folder.
- 4
  Download the 1.50 Sony update from the resource link and put it into the "Recovery" folder now located in memory stick at >PSP>GAME.
- 5
  Disconnect the PSP from the computer and navigate to the recovery flasher located inside of the game menu of the PSP. It will be right at the top of the menu. Select the recovery flasher.
- 6
  Select "Install fresh OFW 1.50" which is the second option down. This will create the firmware file from the 1.50 update. After this is finished, select "Restore complete firmware from backup" from the main flasher menu. Wait as your PSP is brought back to 1.50 official firmware.

Sony PSP