not sure of somthing about custom firmware

[TheEnergY]

Ok i just got a psp off my friend firmware 2.80, after i downgrade to 1.5 without using a pandoras battery can i get the custom firmware without using the battery? i watched alot of videos and they all use pandoras battery to get the custom firmware but can u just download it and run it from your non-pandoras downgraded psp

[nhlan7]

You must have the original game disk Luminies to install CFW 3.52 M33 and once you have it on your PSP then you can move forward to 3.71 M33 and 4.01 M33-2 of your choice. It's a only way to install CFW without Pandora & memstick, good luck.