It did not start responding no flashing light on the top as i seen in you tube videos get a green light when usb pluged into vu and laptop but when trying to write to naza nothing happens so after 10 hrs of swearing at it and blaming it on the latest down load of assistant to 1.8 and firmware to 2.02 was told to send it back via shop witch it came from for them to look at and thats where i am at.