How can I lock On Demand Apps? To unlock channels, on your SoundBox, Go to MENU > Settings > Security PreferencesEnter your PIN and go to 'TV CHANNELS LOCKED AND HIDDEN.'Untick the channels you wish to unlock and press confirm. Related articles How can I unlock channels and Apps? I have forgotten my PIN, how can I recover it? Can I set up Parental Controls for my device? How do I subscribe to On Demand apps? How do I get a replacement remote? Comments 0 comments Article is closed for comments.