Why port 56001 is not accessible on Q990B soundbar?

[ldz]

Trying to control my soundbar input using api call like this thread suggested.

Create "Smart App" that can switch inputSource on my Samsung soundbar (HW-N950/N960)

Hit it with whatever you want. I use Siri (via Shortcuts) sometimes, but you can use a browser even. Something like this: http://192.168.111.132:56001/UIC?cmd=<name>SetFunc</name><p%20type="str"%20name="function"%20val="hdmi2"/> Just change the IP in the beginning. When you hit enter in your browser your N950 should switch to HDMI2. If you are on HDMI2 already, nothing will happen.

But port 56001 is closed on my Q990B.

PORT STATE SERVICE
55001/tcp closed unknown

Port 55001 is also closed.
Only port 8080 is opened.

Soundbar is running latest firmware 1010.0

Please let me know what I am missing here.