I ve tried everyhting. It does not want to update. GL300A. Bin is on root, no text files, charged 100%, reformatted, reinstalled DJ GO, no effect. Light is red on controller. No text files after that tries.

When I updated my RC Firmware, I used the included cable to join my Phantom 3 to the controller and did the update that way.
It works great. How are you trying to update yours?

RedHotPoker

Mine wouldn't update through the usb either so I connected it to the phantom gimbal and updated it that way.