Hi,
With my BQ E5 under Utouch from OTA8 to 12 I hadn't problem with my car radio Pioneer DEH-6100BT, since OTA 13 and all UBports OTA, automatic connection is made but sound doesn't work, to make it work, I have to disconnect manually and reconnect, after that, everything is fine till next disconnection.

Regards.

@advocatux Thanks! Migration is done, my phone is working perfectly, I migrated from AppImage installer a fantastic tool, I have all my data as it was before, many thanks to the team for their work, the installer and the OS are excellent!