Psp upgrading i got 2.50 help this sucks

Question

help i cant update my psp i have 1 gig but no pandoras battery im on 2.50 versionand i want 4.01 m33 on my psp is this possiable to do

Answer 1

You have to get a Pandora's battery and a magic memory stick to load custom firmware.

http://www.pandorasales.com/

If you want to try to download the firmware it's self go here

http://www.psphero.com/index.html