How can i put custom firmware on psp?

Question

when i put cf 4.01 on psp which it have 4.05 original update

the psp show to me message (this game couldn't be open(80147564))

Answer 1

Follow this tutorial: http://www.psp-hacks.com/forums/viewtopi...

if still left with questions you can hit me up on that forum my username is Buzz_Kill