First of all, the "dongle" is sercurity device that identifies an authorized copy of the Bernina embroidery software. Without it inserted into the USB port on the computer, the software will not load. I have heard that the term was made up years ago as a standin for a technical term that needed to be created and never was. Sort of like a widget.
And yes I did find those Yahoo groups and joined up but somehow it added to my confusion as some people seemed to be users who obtained V6 in advance of general release. V6 didn't seem to be generally available. However today I received a newsletter from BerninaUSA with an ad for V6. Again the reader is advised to "see their Bernina dealer." This Bernina dealer is the one who is not responding to me via email.
I did hear from a post that the V6 upgrade sucked the brains from the V5 dongle. I refuse to give up this vital key until the V6 upgrade is in my hands. Guess this means I have to wait untiln the software is released in Switzerland.