Bluetooth Blues

Have a 2013 Prius Four. The Handset Profile works fine (can make and receive calls), but whatever I try, I cannot stream audio via bluetooth.

It just won't connect.

And the entune companion app for my vehicle doesn't even work on recent Android and iOS versions.

Has anybody else had problems with it?

Running the last (ancient) firmware QNX Automotive based firmware (the one released on Augst 1st, 2016).

Has Toyota abandoned Entune 5.1 customers?