Edited with new info after checking it....
I have 11.1.1 (.126). Orange USB is the software, the blue one is the dongle. I'm not using it, make me an offer if interested.
I did just dig around in the Printers folders and the 80600 is not there though.
Another update. I checked the dongle key number on the Onyx website and it is for Production House version 12.0 (had been upgraded). I do have the installer for Production House 12.0.5 so I just tested that and it does work.
The key can be verified here -
https://owa.onyxgfx.com/webkey/KeyInfo1.aspx?key=248A61DA&pkgcode=
That being said - there is no prninst file for the 80600. That model is supported but you would need to find someone on here with an 80600 that came with Onyx that can send you the prninst file. I do have all of the prninst files for version 11 which do work but that version did not include the 80600 (or our Mimaki JV150 for that matter which is also supported in v12). Problem is Onyx will not give access to anything for below version 18.
Maybe someone might be willing to upload a complete set of Onyx 12 print drivers one day.