The ampersand (&) means you are executing the process in the backgroud. The 501 is the process number. Just type 'jobs' to display your processes. I see a lot of people struggling with communication between Android/Edison. I'm considering writing a proper tutorial when I get some free time.
Thanks for your guide. it's quite urgent for me to make SPP work. would u kindly guide me how to connect SPP? Maybe it's the wrong code in http://downloadmirror.intel.com/24909/eng/SPP-loopback.py?
it's done, Edison can connect with Bluetooth spp pro in my Android phone.
I tried Bluetooth SPP Pro and I get the "SPP Communication Failure" too. What did you do to make it work?
Okay I found it : you need to have bluetoothctl open on the Edison and authorize the service when you click connect.
just follow your instruction , it need to add 2 more commands in between. "agent KeyboardDisplay " "default-agent"
python SPP-loopback.py &
rfkill unblock bluetooth
pair <Device ID>
then , it's done.