You can use a special program that allows you to dual boot your pandora.
First, download it here
File Details-PSP-MS-Multiloader-IPL-PSP-Homebrew-Applications -
Now I'll give you instructions on how to install it
(note The steps below will need to be run on all Memory Sticks you use including the Magic Memory Stick. )
Place the Memory Stick into the PSP (Without the Pandora Battery) and plug the PSP into the AC Adapter and turn the PSP on letting it boot to XMB.
When it boots up enable the USB and drag the ipl folder (located inside the Booster's MS Multi IPL Loader folder) to the ROOT of the Memory Stick.
Now disable the USB then go to the Booster's MS Multi IPL Loader\PSP_MS_MULTI_LOADER directory on the PC and execute the "install_psp_ms_multi_loader_ipl.cmd" file. This will bring up a DOS Prompt window.
Now enable the USB again and the DOS window will detect the USB connection. It will write a bunch of information similar to the above image. Type Y at [Y] and then anykey to close the DOS window.
Now turn off the PSP then insert your Pandora Battery and it will automatically boot to XMB. You can now turn the PSP off/on like a normal battery using your Pandora Battery.
To boot to Pandora Menu place the Magic Memory Stick in the PSP you want to unbrick/upgrade and then hold L Trigger down while inserting the Pandora Battery.
PRESTO simple as that and no need for a new battery
