From my understanding you would have the 2.0 version. The "big deal" with 2.3 is that you can choose ft.
So if you made an order for the 2.3 version and have a receipt for it, someone has some explaining to do. What website did you buy yours from?
Sorry can't help you on the voltage thing. Have you tried connecting it this way
Lipo--->OSD---->Vtx. The OSD diagram does show a dedicated +- connection on the OSD
for power in.
What I am having trouble with is understanding this wiring diagram. I believe there is an error. Please correct me if I'm wrong.
But to me it doesn't make sense the way they have drawn and labeled the blue wire between the Vtx and the OSD.
See attached pic.