Hi Juanito!
It might sound strange but I found something interesting on the internet. I am trying to use the onboard RPi bluetooth. So I just use the terminal. The commands go more or less like this:
$ blutetoothctl (which starts a box, i don't know what it's called)
>power on
>agent on
>default-agent
>scan on (this starts an output and my earbud says "paring")
>trust (mac address of the listening device)
>pair (mac address ....up to here all seems good)
>connect (mac address....now comes the error message)
Failed to connect: org.bluez.Error.Failed br-connection-unknown
Kind greetings,
meo