Why won't my sound bar work in the new update (iPhone 4s)?

Updated when I got home and I went to watch a music video and soundbar wouldn't work it would work for my ihome and earbuds but it wouldn't work just plain speakers plz fix

How did you connect to the sound bar before? If Bluetooth - re-pair... if AirPlay... reboot your network devices and the phone and sound bar... You may also need to refer to the support site for the maker of the sound bar and see if other users are having the issue and fixed it and how they did....