OK, it might be too late for most of you on this forum, but it's a good idea to keep the original box the Phantom 2 Vision came in, or at least take a picture of the QR codes on the box for the camera! I'm learning this the hard way... After attempting to mod my range extender for a TP-Link 5 dbi antenna, I killed my range extender and ordered a replacement. Now, my camera cannot bind with the range extender and the Vision App is totally useless! I've contacted DJI US and the online retailer to assist in getting the camera QR code, but no one is responding. Luckily, the weather has been crap so I'm not able to fly, but once my Rotorpixel gimbal arrives (I'm probably in the 3rd or 4th production run....)
I just figured with all the suggestions on upgrading WIFI range, this might be helpful to someone...