controller beeping

All, I would like some help on what to do with an issue that I encountered. I flew my drone yesterday without any issues and decided to upgrade my firmware last night due to warnings from the DJI App. I upgraded the controller and drone firmware but now the controller won't talk to the drone...

Here are the issues: Constant beeping when P3P GL 300C Controller is powered up following antenna mod. Full battery, beeping begins at power up. Not due to inactivity. The controller binds with UAV but It does not register any stick movement in the "Remote controller calibration" screen (This...