Ok, my psp recognize the card with formatting etc. I noe hwo to do homebrew, vids etc, but when i put it in, some of the stuff are corrupt data. When i use a regular sony 1 gig card, everytihig works perfectly. When i want to delete the corrupt things through the computer, they give a message that it is corrupt or if it a folder, they say its not emty, but it is. my model # is msx-m1gn. the firmware 2.0 starts up and then goes bakc to the screen iwth a error. PLZZ help.