The original bluetooth plugin is available in a version 0.5.0 now for the 2006 OS at the same address as before:

http://770.fs-security.com/maemo-bt-plugin/

There is also a Garage entry for it:

https://garage.maemo.org/projects/maemo-bt-plugin/

I have nothing to do with the development effort, I'm just a grateful user of this plugin who thought to mention here that it was available.