Things You'll Need
Instructions
To change your PSP password, you must first restore the default settings of your PSP.
From your welcome screen, choose "Settings." Under settings, choose "Restore Default Settings."
When you choose to restore the default settings, your password will be set back to the default password, which is 0000.
Return to the "Settings," and choose "Change Password." If you remembered your old password, you could enter it now, but if you've restored the default settings, enter in 0000 when the PSP prompts for your password.
You now have access to change your password to anything you'd like. Enter your chosen numbers and save them.