Who has not ever wondered where is the video showing the exposed iPhones in stores and Apple Stores? Do you also have my iPhone? If you are someone who have wondered this for a long time the answer is no, but as (almost) everything in life is possible.
All we have is the file you can download then access via SSH and set the movie called "Demo.mov" in / var / mobile /.
Now all you'll have to restart the device, to assure that you have set a time for self-locking and waiting to lock the device.