HT1212: iOS: Forgotten passcode or device disabled after entering wrong passcodeLearn about iOS: Forgotten passcode or device disabled after entering wrong passcode
Currently Being ModeratedJul 9, 2013 5:57 PM (in response to email@example.com)
Try actually READING the article you linked from. It tells you exactly what you need to do.
Currently Being ModeratedJul 9, 2013 5:58 PM (in response to firstname.lastname@example.org)
Locked Out, Forgot Lock or Restrictions Passcode, or Need to Restore Your Device
Forgotten Restrictions Passcode Help
You will need to restore your device as New to remove a Restrictions passcode. Go through the normal process to restore your device, but when you see the options to restore as New or from a backup, be sure to choose New.
Also, see iTunes- Restoring iOS software.