I have a Samsung Tv UN65 U8000 with a Samsung Soundbar HW-M450. I purchased them together and they have been working together fine for the few years we have had them. Recently I noticed I have to put the volume up much higher than usual to hear anything. I went on line it said to update the firmware. So here are the other issues First I can not connect my sound bar to the Smart Things app to do any update. I then went on line found the updated firmware downloaded it on my computer unzipped the file added it to a flash drive to then plug into the sound bar. I get a message on the sound bar that says no data. I’m not sure what I’m doing wrong or is there another reason the volume has to be set to 30 and up to hear the TV.