I cant get my psp to update to custom firmware 4.01 M33!!!?

Question

I have firmware 4.01 right now but when i put it on my psp in the update folder in game it just says coruppted data. I would appreciate if someone could help me.

Thanks

Answer 1

I am not a pro of PSP and stuff. but for those, please have a look on www.pspiso.com. It's a great site (forum actually), that updates frequently on games, firmware, and stuff about PSP. Good luck and hope that help :D