UMMM you don't need to upgrade you need to downgrade. Once you downgrade you can actually go ahead and upgrade to a custom firmware wich are the ones that allow you to do that and much more. If you really want to know how to do this and are still interested please send me an email at
[email protected]. I say email because its a long process and i would need to ask you some questions about your psp and other stuff to so if you want more help send me a message with psp info as the tittle.
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