PSP Downgrade

I have a PSP 2004 OFW 6.20 and I want to downgrade it to 5.00 or lower . please help me
Answer #1
I have no clue but posting in helpdesk might help more..
Answer #2
you need a pandora battery
Answer #3
actually i might as well ask i fked up my psp trying to get to 5.03 do i need pandora battery then?
Answer #4
yea you need a pandora battery, if you do some searching on google it will tell you, you can make your own but its risky so i suggest you buy one and its real simple
Answer #5
u dont need pandora if u want to upgrade the firmware..,..,
Answer #6
Moved from Off-Topic to Helpdesk.