1. I press all the buttons to show you there is a continuous Led by default 2. I press A and B, the led flashes 3 times (not 2 as you said) 3. I press A (there is no "lock" button) 3 times within 3 seconds When I release A the led flashes continuously
4. Now when I press all the 4 buttons the led flashed 2 times.
