Just tried updating my main RC to the latest firmware (via the download 1.3.0) and following the update I now get a bleeping RC and warning on the iOS app: RC encryption error please contact DJI support.
This is a joke surely this is not a hardware error?
Try reinstalling the old firmware 1.2 and the upgrading again to 1.3 I would also down load anew copy off the app from the App Store this solved a couple of issues regarding lost vidio feed whilst standing within two ft from my inspire