Well my above explanation basically sums it up bluetoothctl to scan, pair, trust, connect
- Go to command line (which I assume you know how as you installed a2dp)
- Run
bluetoothctl - Within bluetoothctl run
scan(your Bose speaker with MAC Address should be shown), nextpair + the MACof the speaker (you can use TAB for autocompletion) - Then run
trust + MACandconnect + MAC