Good afternoon I'm having problems with my controls, a master and another slave. Rarely do the updates and RC aircraft, but just updating the DJI app for GO and that's when the problems started because I had to update the RC in order to use the app. Started the aircraft and got success. But the RC can not the same thing, the RC does not read the flash drive and gets the red light on without anything happening. Including RC not connectam with the Ipad and therefore can not update the app. I'm trying the 1.3 firmware and if I remember correctly RC and aircraft were in firmware 18.104.22.168 Someone has been there and can tell me what should I do? I've tried everything, changed my flash drive (3), cables, everything and nothing happens. I'm desperate. Thanks in advance.