Not sure if this is possible, or if this is where I should post this question, but here it goes. I bought a used PSP. It came with a stick that had a few of the PSP classics games on it. They worked fine until I bought another game online, now they won't run because the PSP is now activated under my user name and not the previous owner's. I am figuring that it likely can be changed to play under my name through editing the .DAT file? I am not quite sure what I would have to change, also would anyone know a good program to do that with on a MAC? Any help would be appreciated.