I've done searches and looked in the stickies and have not found the answer to this yet, so here it goes. I have a psp slim, and I understand you need a pandoras battery in order to downgrade it. But is there a way to do it if your friend has a phat psp that already has custom firmware? If so, could somebody point me in the right direction for a link for a tutorial to do so?
Thank you in advance.