Unfortunately, if one of those codes doesn't work, then it seems that your STB isn't supported. However, may I suggest you program the remote for your cable box for the volume and power controls for your TV. Most STB remotes support this. This will enable you to control most of your main functions with one remote.
I have a Samsung UN60ES7150FXZA Smart TV. My cable provider is Wide Open West (ULTRA). The supplied STB is an Arris MP2000NA. The Samsung TV remote setup can not identify this box. Any thoughts on how to get the Samsung remote to talk to this STB??? I don't want to have to use a half dozen remotes just to watch TV.