@SciresM is slowly making progress on his Atmosphere-NX CFW which will run on exploitable firmwares and the video below shows Team ReSwitched progress.
SciresM said:
After much work and many hours of debugging by @TuxSH and I, Atmosphere's TrustZone re-implementation Exosphere works well enough to boot up to the Home Menu! There is still some kinks to work out/bugs to fix, but this is pretty damn cool.
Heh, a few more bug fixes, and now Atmosphere can boot up my cartridge of BotW (with an update installed on the SD!

via http://www.maxconsole.com/threads/at...r-video.46605/