Skyviper controller stuck on indoor and will not link to the drone

Second time flying the drone it wanted to update the firmware. At the point to recycle the system the controller went in to indoor and will not connect to the drone. Plus the controller will not turn off or anything at all and I have to pull the battery out to turn the controller off. The app on the phone having no problems at all.

There is a fix for this. It was a software bug in the transmitter.

Follow the instructions here
https://discuss.ardupilot.org/t/unbricking-a-skyviper-transmitter/25340