Factory Head Unit Reset - 2012 Toyota 86
 

I have a 2012 Toyota 86 (Australia), with the standard factory fitted head unit. It has served me well over the years. All of a sudden the Bluetooth has stopped working. It is not able to connect, it comes up with an error message immediately "connection failed", when you try to connect a Bluetooth device. . None of my phones pick up the Bluetooth device in the car. I am thinking it is a software issue. Is there anyway to reset/upgrade the software on the unit?

Model number is 100183.

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Audio 19,11,2014 Ver.50.0811