Only a few days ago, Sony Mobile announced plans to begin exploring different options other than a 100% reliance on Android by offering Firefox OS 2014. Being true to this initiative, Sony has now released a new video highlighting some of the UI of Firefox OS on the Xperia E. In fact, those who are eager to get their hands on the OS and have an Xperia E can download Firefox OS ROM. Want more development details? Than the Sony Developer Portable should be your next destination. That is, after you hit the jump and watch the Firefox OS video on the Xperia E.