How to perform a master reset in my blackberry curve 8520.

The following are the procedure in which will reset your phone to its originally factory setting and wipe all internally memory not stored on the  SIM CARD and you should perform a system back up before attempting all this options.                                                                                                                                 Go to the main menu and press the following article Press Menu>>Setting >>Option>>Security Option>>Generally setting>>Menu>>Wipe Handheld>>Continue>>Type in the world blackberry>>Then the touch pad motherboard.