Hi

Have a phantom 3 standard that had no problem until a few days ago. Now I get RC signal lost after take off. The signal comes and goes and Phantom RTH. (Have video feed all the time) Have linked phantom and rc again, calibrated rc and the imu, Installed app again and always calibrate compass. All antenna connections are ok inside rc and inside the phantom. At the location there are no buildings and power lines. Firmware are 1.3.50. How can i fix this problem? How can I reinstall the firmware?

What is the distance  between the remote and drone ? Make sure you've set the antenna correctly  

Thanks Tim, tons of new owners out there and I've noticed
People still don't know proper position even after owning for awhile from YouTube videos.

Max 30m and then i lose the signal. The antenna are set correctly.