Do you have an alternate wired USB-C audio device that you can test this out on? Does it function properly, or is this happening with all wired connections?
Oh, I see. This is about an update! I thought by "nothing happened" you meant your headphones weren't working lol. 😅 So which update are you referring to exactly? The new firmware update? I just heard about this myself from other Ambassadors. I haven't received it either. I would argue it's still rolling out in stages.
What is the name of the headphones, this is paramount to know why it isn't updating. Are they a full-fledged headphone or are they a wired, wireless or true wireless earbuds? Because the USB-C updates are meant for Samsung's own USB-C wired earbuds by AKG, if what you have is a headphone then you would need the AKG headphone app to update them, assuming there's one available.