Update:
It works great !
All I had to do was restart the tablet. Was it mention in the instructions ?

Works amazing with Motorola S9 Bluetooth headset. Somehow the volume is louder than the speakers which is good considering the low output levels of internet tablet (770 and 800 no idea abt 810 )
Thanks for all the great work.

Hi,
Have you solved your problem. I am trying to do the same but doesnt seem to work and gives the same exact error.

Cheers