I bought an OTG cable and a wired 360 controller and cannot get it to work. I plug it in and the green circle keeps flashing and I can't get it to do anything. It doesn't even show up in the input section on settings. Some videos on youtube make it appear to work right out of the box. Do I need an app? I thought with this version of android it would work right away. It is not microsoft brand so i'm not sure if that matters or not? Ideas? Thanks