My TV model (UN55DU7200DXZA) came with a remote which functioned just fine until today. Today, when I pushed the RETURN button to return to the previous channel, it returned me to the home screen instead! When I contacted customer service and spoke with a representative, she told me that the functions of the remote can (and will) be changed during updates to the software and that there was nothing that she could do to restore this capacity because the "remote was functioning properly." I was wondering if I could do a factory reset to restore this basic function to my remote. I mean, really, this is a BASIC function of any remote that I have ever owned.