Changing your PIN is easy. Keeping it from your kids is the hard part:
Open the Main Menu
From Parental Controls select Change Parental Control PIN
Enter your current Parental PIN. The default is 1234. Forgotten your PIN?
Now you can choose your new PIN.
Confirm your PIN.
That’s it. Write your PIN down somewhere safe.
*Depending on your box model, Settings will be on the last tab on the Main Menu or in a cog in the top right corner of the screen. You can get to the cog by pressing Up after opening the Main Menu.