I want to downgrade 4.05 psp firmware to 1.50 custom firmware?

Question by Juggi_JATT: I want to downgrade 4.05 psp firmware to 1.50 custom firmware?
How can i do it?


Best answer:
Answer by chip_chew@sbcglobal.netYou'll need Pandora/Tool battery and magic memory stick. I can do it for you if you want:

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