Review on Cooper Atkins 480 0 8 DualTemp Infrared Temperature by Jonathan Suarez

I tried to change the setting from Fahrenheit to Celsius and I can't. What does "To change °C or °F mode, press 6-2 *four times-6" mean? 6 - IR, 2 - mode buttons. Pressed 6 and 2 four times, nothing. Press 6 and 2, then 6 four times, nothing. 6 and 2 pressed, 2 pressed and 6 pressed four times. Nothing. What does the statement actually mean. Stupid, really stupid.