Earlier this week, Wii U users receive a notification that Nintendo had released a new update for our console: the version 5.1.0 . This new version seems minimally affects the Wii mode (deleting some cIOS) , but may be reinstated. The improvements brought this new version are quite interesting, so we recommend that you upgrade your Wii U.

http://wii.scenebeta.com/noticia/inf...-version-5-1-0