I'm not able to get it to believe I have updated the RC. Every time I turn on everything, it says an update is required for the RC. It says it is downloaded, so I click the button to update again. While doing this, it says current version unknown, update version 1.6.0 (should it be 1.9.*?) And, it does the beeping. Once it is done, the light is green. I restart the RC, then the app again says it needs updating. I've done it 8 times so far. I have updated the quadcopter itself. And, I guess it also updated the batteries. I am familiar with the page that explains how to do the updates and I have done them 3 or 4 times in the past with good results. It also won't take off in this condition, saying there is a mismatch of the versions. I also tried updating the RC by putting a card reader into the RC and turning it on; it showed no signs of doing anything (just a red light). What do I do?