I hope this addresses all issues found so far - please let me know if
anything is still missing.
My mentioning of BT-335 support is actually just a guess -
I'd like to encourage BT-335 users to try my DG-100 support.
The DG-100's Windows software can be configured for an unnamed
Bluetooth device, and the BT-335 manual shows screenshots resembling
the DG-100 software.