How do i access internal files in my psp?

Question

How do I access the real internal files on my psp what program do i use? not the ones where you can just plug it in and see ur usb items, the ones that run the psp, like startup files, and psp files, so and so.

Answer 1

if you want to costumise  your psp and if you have a costume frimware restart your psp and press r and you will see a boot scrn conect your usb and go to advance options press x on flash0