Press the "Settings" button on your remote. Select "General Settings."
Select "Block: PIN" to change the programming lock.
Press "OK" or "Select," depending on your TV model.
Scroll through the list and select "Enable."
Press "OK" or "Select."
Press "Settings" until "General Settings" appears on your TV.
Scroll to "Block: Ratings." Choose from the list of program ratings you wish to unlock. To unlock ratings, highlight the rating by moving the cursor up or down and then press "OK" or "Select."
Type in your password and press "OK" or "Select." Those ratings will now be unlocked.