Updates are optional to each console owner, but may be required in order to retain interoperability with Nintendo's online services.
Each update is cumulative, including all changes from previous updates.
This Wii Menu update will detect and automatically delete such files.
(To check your system menu version, go to you Wii Settings; the version number will be on the upper right.)These applications can apply various hacks to your Wii, including one that will allow you to play import games and another that turns off the annoyingly repetitive system menu background music.
It should be noted that these applications, since they rewrite your system flash memory, can be considered somewhat dangerous.
You can play it safer with Gecko OS, which lets you play import and update-insistent games without altering flash memory.
The system's official integrated development environment, named MULTI and published by embedded software engineering vendor Green Hills Software, is intended for use by Nintendo and its licensed developers in programming the Wii U.
The Wii U Menu is the main dashboard of the system, acting as an application organizer and launcher.