downgrade psp slim 2001 fw5.50

[jmotta]

how can i downgrade my psp to 5.00 fw???

[zxxxy18]

if its not ta 88v3 u can use pandora battery. its easy. just search in you tube something like psp slim make pandora or something like that. well i think u meant downgrade not TO 5.00 but FROM yeah??