Bluetooth pairing with command line

Source: https://askubuntu.com/questions/1225896/huawei-freebuds-3-pairing-with-ubuntu-18-04

Open the bluetooth controller and check its working:

bluetoothctl
show

This should provide you with a name, alias and some other parameters. If not, then the following won’t work and you’ll need to check the bluetooth service/device.

Run the following:

agent on
default-agent
power on
pairable on

These may already be configured like this, but it doesn’t hurt to run them anyway.

Check if your device is already registered:

devices

If your device is listed:

remove [MAC_ADDRESS]

***Replace [MAC_ADDRESS] with your device’s MAC Address

Put your device into pairing mode and then:

pair [MAC_ADDRESS]
connect [MAC_ADDRESS]
trust [MAC_ADDRESS]

If this works, then you can exit with:

exit