you could also use dc7.it will enable your pandora battery to act like a normal battery,or a pandora battery if you hold the L Trigger (or whatever button you select to use with it) and it flashes straight to 4.01 m33-2.
youll need the 4.01 firmware and rename it to 401.pbp and put in your root.
http://www.psp-hacks.com/download.php?id=1506
then put the dc7 folder in this file below into your psp/game folder and run it
File Details-Despertar-del-Cementerio-v7-PSP-Homebrew-Applications -
when the install finishes,turn off the psp.unplug ac adapter,and put in the pandora battery.a menu will auto start up.select install 4.01 m33 from the top,and when its done select reboot,X.you now have a working pandora on 4.01 m33-2.go into usb mode after this,go into tm folder in root,and open up config.txt . there should be one line in it that reads
L = "/TM/DC7/ipl.bin"
save file and exit.now each time you brick you press L trigger to enter the menu instead of it trying to start up each time you boot up PSP.enjoy