Ok, got it working... In the manual is a wrong PPA url given:
Here is how to do it: On your desktop computer: $ sudo add-apt-repository ppa:phablet-team/tools $ sudo apt-get update $ sudo apt-get install phablet-tools-citrain Connect your device via USB cable... $ citrain device-upgrade 22 1234 (where 1234 is your mobile PIN) Device reboots multiple times... --> System Settings --> Info --> Ubuntu 15.04 (r116) :-) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1435040 Title: Ubuntu Phone (BQ E4.5) does not connect to car-bluetooth To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1435040/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs