PSP psp memory problem

[dna123300]

Can someone help me?
I download Soul Cailbur CSO and I converted it to ISO.
The ISO was 349 MB. My psp had 550 MB so I put the ISO onto it using PSP Wifile Transfer (My psp usb port is fried). But for some reason my memory stick says it had 0KB so I deleted one of my games Wipeout pulse (330 MB). So now it said 330 MB left so I tried decrypting the Soul Calibur Eboot, but on the PSP Decryptor it said It can't decrypt it, so I deleted my Soul Calibur and it said I had 550 MB when I actually have about 890 MB!!

BTW I have a PSP 3000 with 5.03 GEN-A.

 

[Abe Froeman]

Back up your files and format your memstick.

 

[Rubr1K]

What he said^^

It sounds like you got a fake memstick.
Hover on a memstick icon, press triangle then "information".
If it's "supported", then it's legit. If it's "unknown" or "unsupported" simply, it's fake.