Hey, I am trying to update my firmware on my RC for the phantom 3 advanced. Currently when i turn on the rc the status led is a cyan color. There also is no sound. The RC version is 1.5.80 and i would like it to go to the latest firmware. The aircraft currently is at the latest firmware. I have the GL300A RC. In the DJI GO app i cannot update. Nor can i update through a flash drive and sd card. I also tried connecting it to the aircraft and update it that way. Nothing Works!! Please help me out