I hope someone can help.  I downloaded the latest firmware and it loaded successfully in the craft but when I put it in the controller and started the controller, nothing happened.  The indicator light on the controller was solid red.  Any ideas as to why it di not download new firmware and what can be done to rectify the problem?

Hello mcgreggr, which phantom 3 do you use? If you are using the Phantom 3 P/A, you can follow this video and update your RC via DJI GO app: