Downgrade 3.10 oe firmware

[maxxx]

Hi could someone please tell me how to downgrade my psp from 3.10oe firmware to 1.5 please!!!! Help would be greatly appreciated :)

[edgyalbert]

You need to use a recovery pack (google it). Place the files from the recovery pack in a folder called RECOVERY in the GAME folder of your memory stick, then put the 1.5 eboot in the same folder, but rename it UPDATE.PBP. You should then be able to downgrade from the recovery console. To use the recovery console you have to power off by holding the power button up for a few seconds, then hold 'R' while powering up again.

[XsavioR]

Or just check out the red type in the oe usage manual here :) cheers m8