Mon Oct 27, 2008 5:20 am by Sypheran
Is it a fairly new PSP? Did it happen to come with OFW 4.01? If so, then it's probably not your memory card or battery, as I've been told, OFW 4.01 PSP's have a different motherboard inside that doesn't allow the magic memory stick to work, and there is yet been a way around it.
It really sucks, until it's figured out only original PSP-2000's and older will be able to be modded.