Raspberry Pi 2 Raspbian: FTP OBEX para telefonar via bluetooth

Question

Estou tentando enviar um arquivo via Bluetooth por meio do OBEX. Eu instalei o pacote obexftp. Eu posso emparelhar o telefone usando pair in bluetoothctl . Quando tento transferir um arquivo com isso:

sudo obexftp -b  00:25:48:11:32:B7 -p /home/pi/rik.txt

Esta é a saída que estou recebendo:

Browsing 00:25:48:11:32:B7 ...
Connecting...failed: connect
Tried to connect for 3000ms
Interupted/bad reception or the device moved out of range: Operation now in progress
Still trying to connect
Connecting...failed: connect
Tried to connect for 0ms
error on connect(): Device or resource busy
Still trying to connect
Connecting...failed: connect
Tried to connect for 0ms
error on connect(): Device or resource busy
Still trying to connect

Como eu resolvo esse problema?