PSP Homebrew

How do I install home brew onto my PSP. I don't know anybody else with it and need to know how to make a pandoras battery (without modifying the hardware if possible).

Classic 4.1 user here.

you need someone with an already hacked (phat) psp.

go on craigslist and find someone to do it for 10$.

There's a readme in the pandora .rar.