Settings --> Equipment Control --> Manage Equipment --> Change TV 

If the speaker turned on during this reboot please select YES on the screen and follow the next screen instructions, the TV will reset. 

Follow the on screen instructions until you get the message "Your Fire TV remote has been updated"

Manage Equipment screen will appear and you want to go into Soundbar --> Change Soundbar --> Scroll to bottom of list and search ZVOX.

Follow the On Screen instructions and you will be all set from there.