That's really weird. Seriously nobody's TV in G30 is working properly? Or does it at least work in the car's country of origin?
I noticed that the software/firmware in all my "head units" is from 2017 (and some cannot be upgraded due to some unknown ethernet/flexray communication faults) so I'm going to try to upgrade all the (31?) head units to the latest software and we will see. (Not that I could do it myself but I have friends who are experts and might be able to).