Last xmas I purchased a 'Ready to Fly" storm 550. All i could get was the led status light to search for a gps... it never locked an the drone never unlocked. First they said 'well when it left here we got it to bind, you must have locked it 'somehow' All I did was follow the step by step instruction manual but to no avail. They ignored my countless email questions about transmitter tests until after Feb when they basically said 'we got your money, deal with it" I even purchased to what was a total replacement of all electronics on
The quad... same story. Last time i tried to check it was july when the transmitter died.
SAVE YOUR HARD EARNED MONEY, GO TO AMAZON or even EBAY but stay away from think rc!