Hi guys, has anyone ever tried to connect back the Zenmuse X3 camera after upgrading before to X5? I used X5 for two year but want to sell the drone now with X3 camera and it connected and worked good once but now it doesnt connect to the camera. It doesnt react even to do gimbal check after turning on the bird. I thought it might be an issue with the firmware but I cant now update any firmware as the camera is not connecting at all and SD card is like this not visible either. Can you do firmware update by the GO app? Any other ideas? Thanks for all the help.