For some reason I can't change my wallpaper. When I try a new wallpaper, I'm still stuck with my current one. I think it has something to do with the permissions of LockBackground.jpg because I was messing with it back when I was jailbroken. The thing is, now this image with the incorrect file permissions is backed up in my iPhone backup so whenever I restore, I'm stuck with the same file again. Is there a way around this so I don't have to restore. I've already tried resetting all settings. It reset all my settings except for my wallpaper. Am I screwed?