Hacking psn network password

[naughtytony]

I know you can view the system registry on a jail broken ps3 to see saved passwords, but unfortunately i have a 3100a which there is no jailbreak for but is there possible way to get into the system registry in order to view the saved passwords? Yes i am one of the many that created whatever when i created the email and password. It sucks because i have it on automatic sign in and the password is hidden.