Does the RS232 port on a 861 give information like source labelling?

I am busy with finding a way for source labeling into my DSP5200SL speakers from a 861v4 through a AC12. I have connected the DIN5 and a RS232 cable between the AC12 and 861v4.

I hope with the new firmware 8.1 that it also would send source labeling over RS232. Then I could use it, and with the virtualMSR should it be possible to.

DSP8000SE - 218 - Roon