Wii system software
|Company / developer||Nintendo|
|OS family||Nintendo proprietary|
|Source model||Closed source|
|Initial release||1.0 / November 19, 2006|
|Latest release||4.3 / November 6, 2012|
|Available in||German, English, Spanish, French, Italian, Dutch, Russian, Japanese, Korean, simplified Chinese, traditional Chinese|
|Update method||Direct Download
|Preceded by||Nintendo GameCube OS|
|Succeeded by||Wii U OS|
Wii system software is a set of updatable firmware versions, and a software frontend on the Wii video game console. Updates, which are downloaded via the system's Internet connection (WiiConnect24), allow Nintendo to add additional features and software. When a new update becomes available, Nintendo sends a message to connected systems notifying them of the available update.
Several game discs, both first-party and third-party games, have included system software updates so that players who are not connected to the Internet can still update their system. Additionally this can "force" an upgrade by requiring the player to perform the update, without which the new game cannot be played. Some online games (such as Super Smash Bros. Brawl and Mario Kart Wii) have come with specific extra updates, such as being able to receive posts from game-specific addresses, so, regardless of the version of the installed software, it will install an update.
The Wii's firmware is in the form of IOSs (thought by the Wii homebrew developers to stand for 'Input Output Systems' or 'Internal Operating Systems'), which run on a separate ARM architecture processor to other Wii software (nicknamed Starlet by the Wii homebrew community, as it is physically located inside the graphics chip, the Hollywood, so it is a small part of Hollywood. The patent for the Wii U indicates a similar device which is simply named "Input/Output Processor"). These control input and output between the code running on the main processor (the PowerPC "Broadway" processor) and the Wii's hardware features that did not exist on the GameCube, which can only be accessed via the ARM.
When Nintendo releases a new IOS version, except for unusual circumstances (for example security updates to block homebrew), the new IOS does not replace any IOS already installed. Instead, it gets installed in addition to any current IOS versions. All native Wii software (including games distributed on Nintendo optical discs, the System Menu itself, Virtual Console games, WiiWare, and Wii Channels), with the exception of certain homebrew applications, have the IOS version hardcoded into the software.
When the software is run, the IOS that is hardcoded gets loaded by the Wii, which then loads the software itself. If that IOS does not exist on the Wii, in the case of disc-based software, it gets installed automatically (after the user is prompted). With downloaded software, this should not theoretically happen, as the user cannot access the shop to download software unless the player has all the IOS versions that they require. However, if homebrew is used to forcefully install or run a piece of software when the required IOS does not exist, the user is brought back to the system menu.
Nintendo created this system so that new updates wouldn't unintentionally break compatibility with older games, but it does have the side effect that it uses up space on the Wii's internal NAND Flash memory. IOSes are referred to by their number, which can theoretically be between 0 and 254, although many numbers are skipped, presumably being development versions that were never completed.
Only one IOS version can run at any given time. The only time an IOS isn't running is when the Wii enters GameCube backward compatibility mode, during which the Wii runs a variant of IOS specifically for GameCube games, MIOS.
The System Menu provides a graphical interface to the Wii's abilities. All games run directly on the Broadway processor, and either directly interface with the hardware (for the hardware common to the Wii and GameCube), or interface with IOS running on the ARM architecture processor (for Wii-specific hardware). The ARM processor does not have access to the screen, and therefore neither does IOS. This means that while a piece of software is running, everything seen on the screen comes from that software, and not from any operating system or firmware. This includes the home menu (a menu of uniform appearance that appears when the home button is pressed in any piece of official Wii software), and any error messages that might appear. Therefore, the version number reported by the Wii is actually only the version number of the System Menu. This is why some updates do not result in a change of the version number: the System Menu itself is not updated, only (for example) IOSes and channels. As a side effect, this means it is impossible for Nintendo to implement any functions that would affect the games themselves, for example an in-game system menu (similar to the Xbox 360's in-game Dashboard or the PS3's in-game XMB).
Wii System Update releases
This is a list of features included in Wii's System Updates.
|System Menu Version||Date Released||Region||Channel updated and description of update||Days until next version update (worldwide)|
|4.3||November 6, 2012||
||N/A (final update)|
|September 7, 2010||
|June 21, 2010||
|4.2||September 28, 2009||
|4.1||July 30, 2009||
|July 15, 2009|
|July 3, 2009|
|4.0||March 25, 2009||
|3.5||March 3, 2009||22 days|
|3.4||November 17, 2008||
|3.3||November 12, 2008||
|October 23, 2008|
|July 22, 2008||
|June 17, 2008||
|3.2||March 21, 2008||
|March 20, 2008|
|February 25, 2008|
|3.1||January 30, 2008||
|December 10, 2007|
|October 10, 2007|
|3.0||August 6, 2007||
|2.2||April 11, 2007||117 days|
|2.1||January 26, 2007||75 days|
|January 10, 2007||
|2.0||December 19, 2006||
|November 30, 2006||
|1.0||November 19, 2006||11 days|
Wii Channel releases and updates
This is a list of the updates and releases of Wii Channels.
§ = Released as part of a system update so a separate download is not required.
Discontinued channels (as of 28th June 2013):
- News Channel
- Forecast Channel
- Everybody Votes Channel
- Mii Contest Channel/Check Mii Out Channel
- Nintendo Channel
|Date Released||Region||Download||Channel updated and description of update|
|January 17, 2013||
|December 10, 2012||
|November 15, 2012||
|February 16, 2012||
|March 16, 2011||
|March 9, 2011||
|October 18, 2010||
|January 9, 2012|
|November 18, 2009||
|October 20, 2009||§|
|September 9, 2009||
|September 1, 2009||
|September 14, 2009||
|July 15, 2009|
|May 26, 2009||
|May 1, 2009||
|December 5, 2008||
|December 2, 2008||
|November 18, 2008||
|November 18, 2008||
|July 23, 2008||
|June 26, 2008|
|April 27, 2008||
|April 24, 2008|
|April 11, 2008|
|April 10, 2008|
|March 4, 2008||
|January 30, 2008||
|December 20, 2007|
|10 December 2007||§||
|May 21, 2008||
|May 8, 2008|
|April 25, 2008|
|December 1, 2007|
|May 30, 2008||
|May 7, 2008|
|November 27, 2007|
|November 12, 2007||
|October 10, 2007||§|
|August 10, 2007||
|August 6, 2007||§||
|April 11, 2007|
|February 13, 2007|
|January 26, 2007||§||
|December 22, 2006||
|December 19, 2006||§||
Other gaming platforms from Nintendo:
- Nintendo 3DS system software
- Nintendo DSi system software
- Wii U system software
- Nintendo Wi-Fi Connection
- Wii Shop Channel
Other gaming platforms from the next generation:
Other gaming platforms from this generation:
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- IOS: history, build process
- US patent US20110190052, Fig. 2,11a
- Why the Wii will never get any better
- Wii Menu 4.2: a lack of imagination
- System Menu 4.2 - WiiBrew
- Error 003 - GBAtemp.net
- Wii firmware casualties "small" - Nintendo News | Wii | Eurogamer
- System Menu 4.1 - WiiBrew
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- | Nintendo - Customer Service | Wii - SD Card Menu
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- "Final Internet Channel now available". N-Sider.com. 2007-04-11. Retrieved 2009-01-20.
- "News Channel goes live". N-Sider.com. 2007-01-26. Retrieved 2009-01-20.
- "Forecast Channel launches worldwide". N-Sider.com. 2006-12-19. Retrieved 2009-01-20.
- "Yesterday's "useless" update actually plugged Wii Shop Channel hole". N-Sider.com. 2006-11-30. Retrieved 2009-01-20.
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- "Customer Service | Wii — Wii System Menu and Feature Updates". Nintendo. Retrieved 2009-01-20.
- "Everybody Votes Channel now available". N-Sider.com. 2007-02-14. Retrieved 2009-01-20.
- Wii System Menu and Feature Updates
- Site documenting all updates during an update and how they affect homebrew and other hacks