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How do you downgrade a custom firmware PSP to official firmware 1.5?

Need full psp custom firmware 3.03 guide!?

  • Hello. I currently have sony's 3.03 firmware and would like to play my psx(also called ps1) games on my psp. The problem is I need custom firmware 3.03. Can anyone help? Is there a way to do this without custom firmware? If not please tell me how to get custom firmware version 3.03.

  • Answer:

    the only way to do it without custom firmware is if you update to 3.71+ official firmware and buy the psx games from the sony store. so to install cfw on 3.03 you need to downgrade to 1.50 using the gta liberty city stories umd, or the lumines umd, or the pandora battery. there are no software downgraders for 3.03. i would recommend a pandora battery because its far more useful then anything else http://www.zshare.net/download/5554099c2452a4/ open my guide with winrar and follow the steps.

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