Instructions
Attempt all possible security question answers before contacting Sony to let them know you forgot the answer to your security question.
Call the Sony PlayStation customer service line at 1-800-345-SONY. Explain to your customer service representative that you have forgotten your account security question and that you need to create a new account security question.
Give the account representative the following information: your user name, your full legal name, your address, your PS3 account ID, and your birth date. Make sure that you give the representative your name and address that was correct at the time you created the PS3 account.
Create a new security question with the help of the customer service representative. You should think of security question that would be impossible to forget and difficult for anyone else to guess.