Pandora Battery help please?

pandora battery help please?

I bought a pandora battery for psp 3000 slim
i made it 5.0m33, it was great.
but i tried to put emulators on the psp, and updated it to 5.03
but not the psp does not read iso or cso files.
so is there a way to bring back the pandora battery to restart itself like it was when i first got it.
like can i bring the psp back to 5.0m33??

thank you so much, i will give you many points