NF1 is the latest release for Romania. NE9 is the current release for other countries. NF1 and NE9 are Tizen based. Tizen isn't officially released to the U.S. yet so feel free to use another country. I used NE9 from Canada.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer? | Terms of Service