Today 450x got the software update and happy to see Bluetooth features enabled and the turn indicator issue fixed. There is also an option to disable the the auto off feature for the turn indicator.
Bluetooth works well and able to control music and accept reject calls. As always touch response is disabled when the vehicle is moving. So you have to stop to use these features.
Music control ideas for future update.
It would have been nice if they provide music control like double tapping or long press the turn indicator switch towards left for previous and right for next song 