I had some free time, I stood by the car. first I updated the ... software, then the language file. so he already allowed it.OK are you following the correct process......switch ignition OFF...place flashdrive in cars USB......then switch ignition ON but dont start engine.....not sure you get any sound I just use to see updating and the language was done in less than 10 seconds
I'm writing it in case it helps someone else.
Thanks.