It's been about 3 weeks since I last flew my P4 and today I discovered I need to update the firmware for the controler.  I downloaded the new firmware and it successfully installed.  I restarted everything and got ready to fly.  Right after I engaged the props, the video feed started glitching like crazy.  So bad I couldn't fly.
I've ran firmware upgrades in the past without issues, until today.

So has anyone else experienced this issue after the firmware upgrade?  If so, what fix did you do?

Hi, could you please describe the glitch in detail?
Also what's the firmware version of the aircraft?

Make sure the firmware update didn't change your previous settings to factory default.  Hardware encoding, video cache.

Double check your settings, as MGR suggested and let us know if the issue persists. You may want to try relinking the aircraft to the RC to make sure that the internal Lightbridge is connected properly.

I also had this issue. I again make the RC link with the Phantom 4 and apparently Everything was ok. I still can not confirm flying because it started raining. If however my problem will continue to inform you see another solution. Thank you.