[A14Turbo]

Have you tried reinstalling/updating the HU software? I believe it is as simple as plugging in a USB with the software ISO file on it.

 

[A14Turbo]

Sure, try this thread out. I used it to fix my non-nav bluetooth issues:

Head Unit 5.1.63 Update - Navigation and Non-navigation...

Head Unit 5.1.68 Update - Navigation and Non-navigation files and instructions. Hello All- I've seen the issue floating around the forums and a few of the V/VT facebook pages that a lots of us are running into Bluetooth issues with iDevices running iOS 8 / equivalent Android OS (sorry, I'm an...

www.velosterturbo.org

And I think I saw another thread in here for a more recent update. Try searching "iso file" on the forum.