How to change account on PSP

[Suzuku]

Okay, so I downloaded FFVIII and Dissidia from PSN two weeks ago. I downloaded them on my computer because it was faster than downloading it directly to the PSP. However, I apparently used a different account than the one that was originally registered on my PSP to download the games. So when I was transferring them to my PSP, a message popped up saying that loading the games would invalidate the current account on the PSP. I thought it wouldn't take any skin off my bones, so I went ahead and did it. The problem is, now when I try to play FFVII, which I downloaded straight to the PSP on a different account, it won't let me because it's saying the account isn't registered on the PSP. Is there anyway that I can transfer FFVII to the other account or change the account my PSP is on?

As a side not, I think it's pretty fucking stupid that Sony decided to do this crap. This is even worse than Apple-level lock down. :/

 

[Keyblade-War]

All you have to do is go to your account on your psp hit delete account(wont be deleted from server you can still re-activate it) then go to make a PSN account the hit use exsiting account put in your info and your account will be there all your downloads and stuff then just go to download history and re-download your game.