I installed bluez5 to the tablet as it had bluez4. No change.
Then I noticed the package droid-config-tbj-bluez5 isn't installed even though droid-config-tbj-bluez4 was earlier.

I tried to install it but unfortunately the package conflicts with bluez-configs provided by droid-config-tbj-onda-v820w-v3-1-2.i486 and cannot be installed.

If I try removing bluez-configs first I get a warning that I will end up with a broken system which is something I don't want to try now since BT isn't essential for me.

(Basically just shots in the dark, but thought I'd share anyway)