I had problems with Devhook before and finding other PSP's (ie: it never worked). However prior to downgrading and upgrading my nephew's 2.71 TA-082 PSP I could run a backup off my stick and have the nephew run the disc in his system and we could play multiplayer games (I was already at 3.03 OE on my PSP). Now all our PSP's are at 3.03 OE-B and can communicate with each other fine still.
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