A:Answer Hi JohnB,
You can find the available firmware for your Soundbar by going to Samsung’s website then clicking “Support” in the top right corner. Then go to “Manuals & Software” > “TVs & Home Theater” > “Home Theater” > “Sound Bars”. From there, you can select the HW-Q750C under Q Series.
Download the update and install it via USB thumb stick to your soundbar. If you need additional help, there are how-to instructions on this page. Please know that Samsung Customer Service is here to assist as well.
You also have the option to install SmartThings on a smart device (iOS/Android and phone or tablet) then connect your Soundbar to Wi-Fi. Within the SmartThings app you can manually check for software updates, or set it to automatic and you'll be all set.
~Samsung Solutions