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((short description|Operating system for Nintendo's Wii home video game console))
((Being merged|spacetype=article|target=Wii Menu|dir=from|discuss=Talk:Wii system software#Proposed merge of Wii Menu into Wii system software|date=July 2022))
((more citations needed|date=July 2015))
((Infobox OS
| name = Wii system software
| logo = [[File:Wii.svg|frameless|upright=0.5]]
| logo caption = 
| screenshot = 
| caption = The Wii Menu
| collapsible = 
| developer = [[Nintendo]]
| family = Nintendo proprietary
| released = 1.0 / ((Start date and age|2006|11|19))
| language = ((flat list|
*Chinese (Simplified)
*Chinese (Traditional)
*Dutch
*English (United Kingdom)
*English (United States)
*French (Canada)
*French (France)
*German
*Italian
*Japanese
*Korean
*Spanish (Latin America)
*Spanish (Spain)))
| userland = 
| ui = 
| license = 
| website = 
| working_state = Discontinued
| source_model = [[Closed source]]
| latest_release_version = 4.3
| latest_release_date = ((Start date and age|2010|09|07))<ref>((Cite web|url=https://en-americas-support.nintendo.com/app/answers/detail/a_id/2522/~/system-menu-update-history|title=Nintendo Support: System Menu Update History|website=en-americas-support.nintendo.com|access-date=2021-06-07|archive-date=2021-05-06|archive-url=https://web.archive.org/web/20210506183220/https://en-americas-support.nintendo.com/app/answers/detail/a_id/2522/~/system-menu-update-history|url-status=live))</ref>
| latest_preview_version = 
| latest_preview_date = 
| frequently_updated = 
| marketing_target = 
| programmed_in = [[C (programming language)|C]], [[C++]] / PPC
| prog_language = [[C (programming language)|C]], [[C++]] / PPC
| updatemodel = Direct download<br/>[[Nintendo optical discs#Wii Optical Disc|Game disc]]
| package_manager = 
| supported_platforms = [[Wii]], [[Wii U]]
| kernel_type = 
| preceded_by = 
| succeeded_by = [[Wii U system software]]

| support status = Unsupported

))

The '''Wii system software''' is a discontinued set of updatable firmware versions and a software frontend on the [[Wii]] [[home video game console]]. Updates, which could be downloaded over the Internet or read from a [[Nintendo optical discs#Wii Optical Disc|game disc]], allowed [[Nintendo]] to add additional features and software, as well as to patch [[Vulnerability (computing)|security vulnerabilities]] used by users to load [[Homebrew (video games)#Wii|homebrew software]]. When a new update became available, Nintendo sent a message to the [[Wii Menu#Wii Message Board|Wii Message Board]] of Internet-connected systems notifying them of the available update.

Most game discs, including [[Video game developer#First-party developer|first-party]] and [[Video game developer#Third-party developer|third-party]] games, include system software updates<ref name="gh5_mandatory_update">((cite web|url=http://5frets.com/74/guitar-hero-5-forces-mandatory-wii-system-update/|title=Guitar Hero 5 Forces Mandatory Wii System Update|publisher=5Frets.com|date=2 September 2009|archive-url=https://web.archive.org/web/20090905143840/http://5frets.com/74/guitar-hero-5-forces-mandatory-wii-system-update/|archive-date=5 September 2009|url-status=dead))</ref><ref>((cite book|chapter=Channeling the System: Access, Distribution, and Transmission|title=Codename Revolution: The Nintendo Wii Platform|series=Platform Studies|first1=Steven E.|last1=Jones|first2=George K.|last2=Thiruvathukal|date=24 February 2012|publisher=[[MIT Press]]|isbn=978-0-262-01680-3|page=100|chapter-url=https://books.google.com/books?id=6fu-EfVOAdEC&q=disc%20update&pg=PA100|access-date=20 November 2020|archive-date=9 June 2021|archive-url=https://web.archive.org/web/20210609161224/https://books.google.com/books?id=6fu-EfVOAdEC&q=disc+update&pg=PA100|url-status=live))</ref> so that systems that are not connected to the Internet can still receive updates. The system menu will not start such games if their updates have not been installed, so this has the consequence of forcing users to install updates in order to play these games.<ref name="gh5_mandatory_update"/>  Some games, such as online games like ''[[Super Smash Bros. Brawl]]'' and ''[[Mario Kart Wii]]'', contain specific extra updates, such as the ability to receive Wii Message Board posts from game-specific addresses; therefore, these games always require that an update be installed before their first time running on a given console.((Citation needed|date=January 2013))

==Technology==

===IOS===
((not to be confused with|Apple iOS|Cisco IOS))

The Wii's firmware has many active branches known as IOSes, thought by the [[Wii homebrew]] developers to stand for "Input Output Systems" or "Internal Operating Systems".<ref>((cite web|website=WiiBrew|author=Bushing|date=2008-03-22|title=IOS37 (initial revision)|access-date=9 August 2021|url=https://wiibrew.org/w/index.php?title=IOS37&oldid=6145|archive-url=https://web.archive.org/web/20190122035021/https://wiibrew.org/w/index.php?title=IOS37&oldid=6145|archive-date=22 January 2019|url-status=live))</ref><ref>((cite web|website=HackMii|author=Bushing|date=2009-06-30|title=IOS: history, build process|url=http://hackmii.com/2009/06/ios-history-build-process/|access-date=2009-07-05|archive-date=2009-07-04|archive-url=https://web.archive.org/web/20090704180719/http://hackmii.com/2009/06/ios-history-build-process/|url-status=live))</ref>((sps|date=September 2015)) The currently active IOS, also simply referred to as just "IOS," runs on a separate [[ARM9|ARM926EJ-S]] processor unofficially nicknamed [[Hollywood (graphics chip)#Starlet|Starlet]], which resides within the [[Hollywood (graphics chip)|Hollywood GPU]]. The patent for the [[Wii U]] shows a similar device which is simply named "Input/Output Processor".<ref>((cite patent|assign1=[[Nintendo Co. Ltd.]]|country=US|number=8317615|pubdate=2012-11-27|title=Display device, game system, and game method|inventor1-last=Takeda|inventor1-first=Genyo|inventor2-last=Kawai|inventor2-first=Eizi))</ref>((synthesis inline|date=September 2015)) IOS controls I/O between the code running on the main [[Broadway (microprocessor)|Broadway]] processor and the various Wii hardware that does not also exist on the [[GameCube]].<ref>((cite web |title=Hardware/Starlet |url=https://wiibrew.org/wiki/Hardware/Starlet |website=Wiibrew |access-date=14 June 2020 |archive-url=https://web.archive.org/web/20200516131251/https://wiibrew.org/wiki/Hardware/Starlet |archive-date=16 May 2020 |url-status=live))</ref><ref>((cite web |title=IOS |url=https://wiibrew.org/wiki/IOS |website=Wiibrew |access-date=21 June 2020 |archive-url=https://web.archive.org/web/20200303204813/http://wiibrew.org/wiki/IOS |archive-date=3 March 2020 |url-status=live))</ref>

Except for [[Software bug|bug]] fixes, new IOS versions do not replace existing IOS versions. Instead, Wii consoles have multiple IOS versions installed. All native Wii software (including games distributed on [[Nintendo optical disc]]s, 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 with a system update (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 would not unintentionally break compatibility with older games, but it does have the side effect that it uses up space on the Wii's internal [[Flash memory#NAND flash|NAND Flash]] memory. IOSes are referred to by their number, which can theoretically be between 3 and 255, 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 is not running is when the Wii enters GameCube [[backward compatibility]] mode, during which the Wii runs a variant of IOS specifically for GameCube games, MIOS, which contains a modified version of the GameCube's [[Initial Program Load|IPL]]. Custom IOSes, called cIOSes, can be installed with homebrew. The main purpose of cIOS is to allow homebrew users to use other homebrew apps such as USB Loader GX (allows games stored in the WBFS file format to be run from a USB stick).<ref>((Cite web|last=RiiConnect24|title=cIOS|url=https://wii.guide/cios.html|access-date=2020-12-26|website=Wii Guide|language=en|archive-date=2020-11-12|archive-url=https://web.archive.org/web/20201112010744/https://wii.guide/cios.html|url-status=live))</ref><ref>((Cite web|last=RiiConnect24|title=USB Loader GX|url=https://wii.guide/usbloadergx.html|access-date=2020-12-26|website=Wii Guide|language=en|archive-date=2021-01-10|archive-url=https://web.archive.org/web/20210110203619/https://wii.guide/usbloadergx.html|url-status=live))</ref>

===User interface===
The system 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 (including the HOME button menu) comes from that software, and not from any operating system or firmware. 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 [[PlayStation 3]]'s in-game [[XrossMediaBar|XMB]]).<ref>((cite web|website=HackMii|author=marcan|date=2009-02-28|url=http://hackmii.com/2009/02/why-the-wii-will-never-get-any-better/|title=Why the Wii will never get any better|access-date=2009-07-05|archive-date=2009-03-06|archive-url=https://web.archive.org/web/20090306214318/http://hackmii.com/2009/02/why-the-wii-will-never-get-any-better/|url-status=live))</ref>((sps|date=September 2015))

The Wii Menu (known internally as the System Menu) is the name of the [[user interface]] for the Wii game console, and it is the first thing to be seen when the system boots up. Similar to many other [[video game console]]s, the Wii is not only about games. For example, it is possible to install applications such as [[Netflix]] to stream media (without requiring a disc) on the Wii. The Wii Menu let users access both game and no-game functions through built-in applications called Channels, which are designed to represent [[television channel]]s. There are six primary channels: the [[Disc Channel]], [[Mii Channel]], [[Photo Channel]], [[Wii Shop Channel]], [[Forecast Channel]] and [[News Channel]], although the latter two were not initially included and only became available via system updates. Some of the functions provided by these Channels on the Wii used to be limited to a [[computer]], such as a full-featured [[web browser]] and digital photo viewer. Users can also use Channels to create and share cartoon-like digital avatars called [[Mii]]s and download new games and Channels directly from the Wii Shop Channel.<ref>"Wii For Dummies", by Kyle Orland, p3-4</ref> New Channels include, for example, the [[Everybody Votes Channel]] and the [[Internet Channel]]. Separate Channels are graphically displayed in a grid and can be navigated using the pointer capability of the [[Wii Remote]].<ref>"WII Game Creation for Teens", by Michael Duggan, p36</ref> Users can also rearrange these Channels if they are not satisfied with how the Channels are originally organized on the menu.<ref>((Cite web|url=http://www.nintendoworldreport.com/feature/12566/wii-tricks-and-secrets-wii-menu-rearranging-channels|title=Wii Menu: Rearranging Channels - Feature|website=Nintendo World Report|access-date=2015-11-12|archive-date=2015-11-17|archive-url=https://web.archive.org/web/20151117014045/http://www.nintendoworldreport.com/feature/12566/wii-tricks-and-secrets-wii-menu-rearranging-channels|url-status=live))</ref>

===Network features===
The Wii system supports [[wireless]] connectivity with the [[Nintendo DS]] handheld console with no additional accessories. This connectivity allows players to use the Nintendo DS [[microphone]] and [[touch screen]] as inputs for Wii games. ''[[Pokémon Battle Revolution]]'' is the first example Nintendo has given of a game using Nintendo DS-Wii connectivity. Nintendo later released the [[Nintendo Channel]] for the Wii allowing its users to download game demos or additional data to their Nintendo DS.

Like many other [[video game console]]s, the Wii console is able to connect to the [[Internet]], although this is not required for the Wii system itself to function. Each Wii has its own unique 16-digit Wii Code for use with Wii's non-game features. With Internet connection enabled users are able to access the established [[Nintendo Wi-Fi Connection]] service. [[Wireless security|Wireless encryption]] by [[Wired Equivalent Privacy|WEP]], [[Wi-Fi Protected Access|WPA]] (TKIP/RC4) and [[IEEE 802.11i-2004|WPA2]] (CCMP/AES) is supported.<ref>((cite web|url=https://www.nintendo.com/consumer/systems/wii/en_na/onlineWirelessRouterChoose.jsp|title=Choosing a Wireless Router|access-date=December 13, 2006|publisher=Nintendo|archive-date=January 21, 2007|archive-url=https://web.archive.org/web/20070121040233/http://www.nintendo.com/consumer/systems/wii/en_na/onlineWirelessRouterChoose.jsp|url-status=live))</ref> [[AOSS]] support was added in System Menu version 3.0.<ref>((cite web|url=https://www.ign.com/boards/threads/overlooked-wii-3-0-update-function.147973010/|title=Overlooked Wii 3.0 Update Function|access-date=November 16, 2012|publisher=IGN|first=Craig|last=Harris|date=August 8, 2007|archive-date=April 20, 2013|archive-url=https://web.archive.org/web/20130420233548/http://www.ign.com/boards/threads/overlooked-wii-3-0-update-function.147973010/|url-status=live))</ref>
As with the Nintendo DS, Nintendo does not charge for playing via the service;<ref name="USA Today">((cite news|url=https://www.usatoday.com/tech/gaming/2006-08-14-nintendo-qa_x.htm|title=Nintendo hopes Wii spells wiinner|access-date=August 16, 2006|date=August 15, 2006|publisher=[[USA Today]]|archive-date=May 22, 2011|archive-url=https://web.archive.org/web/20110522150812/http://www.usatoday.com/tech/gaming/2006-08-14-nintendo-qa_x.htm|url-status=live))</ref><ref name="Wii Wi-Fi page">((cite web|first=Stephen|last=Johnson|date=July 18, 2006|url=http://www.g4tv.com/thefeed/blog/post/618959/Secret_Wii_Details_Revealed.html|title=Secret Wii Details Revealed|work=The Feed|publisher=G4|access-date=July 20, 2006|archive-date=September 26, 2007|archive-url=https://web.archive.org/web/20070926222903/http://www.g4tv.com/thefeed/blog/post/618959/Secret_Wii_Details_Revealed.html|url-status=dead))</ref> the 12-digit Friend Code system controls how players connect to one another. The service has a few features for the console, including the [[Virtual Console]], [[WiiConnect24]] and several Channels. The Wii console can also communicate and connect with other Wii systems through a self-generated wireless LAN, enabling local wireless multiplayer on different television sets. The system also implements console-based software, including the Wii Message Board. One can connect to the Internet with third-party devices as well.<ref>((Cite magazine|title=Nyko Net Connect|magazine=[[Game Informer]]|volume=178|date=February 2008|pages=44))</ref><ref name=wiigame38>"WII Game Creation for Teens", by Michael Duggan, p38</ref>

The Wii console also includes a [[web browser]] known as the [[Internet Channel]], which is a version of the [[Opera (web browser)|Opera]] 9 browser with menus. It is meant to be a convenient way to access the web on the television screen, although it is far from offering a comfortable user interface compared with modern Internet browsers. A virtual keyboard pops up when needed for input, and the [[Wii Remote]] acts like a mouse, making it possible to click anywhere on the screen and navigate through web links. However, the browser cannot always handle all the features of most normal web pages, although it does support [[Adobe Flash]], thus capable of playing Flash games.<ref>"Codename Revolution: The Nintendo Wii Platform", by Steven E. Jones, George K. Thiruvathuka, p119-120</ref> Some third-party services such as the online [[BBC iPlayer]] were also available on the Wii via the Internet Channel browser, although BBC iPlayer was later relaunched as the separate BBC iPlayer Channel on the Wii.<ref>((cite news|url=http://news.bbc.co.uk/1/hi/8357777.stm|title=BBC iPlayer launches Wii channel|publisher=BBC|access-date=December 26, 2009|date=November 13, 2009|archive-date=October 7, 2018|archive-url=https://web.archive.org/web/20181007183338/http://news.bbc.co.uk/1/hi/8357777.stm|url-status=live))</ref> In addition, Internet access including the Internet Channel and system updates may be restricted by the [[parental controls]] feature of the Wii.<ref name=wiigame38 />

===Backward compatibility===
The original designs of the Nintendo Wii console, more specifically the Wii models made pre-2011 were fully [[backward compatible]] with [[GameCube]] devices including game discs, memory cards and controllers. This was because the Wii hardware had ports for both GameCube memory cards, and peripherals and its slot-loading drive was able to accept and read the previous console's discs. GameCube games work with the Wii without any additional configuration, but a GameCube controller is required to play GameCube titles; neither the [[Wii Remote]] or the [[Classic Controller]] functions in this capacity. The Wii supports [[progressive-scan]] output in 480p-enabled GameCube titles. Peripherals can be connected via a set of four GameCube controller sockets and two Memory Card slots (concealed by removable flip-open panels).<ref name="Wii: The Total Story">((cite web|url=http://wii.ign.com/launchguide/hardware1.html |title=Wii: The Total Story |access-date=November 20, 2006 |publisher=IGN |url-status=dead |archive-url=https://web.archive.org/web/20061218073811/http://wii.ign.com/launchguide/hardware1.html |archive-date=December 18, 2006 ))</ref> The console retains connectivity with the [[Game Boy Advance]] and [[Nintendo e-Reader|e-Reader]] through the [[GameCube – Game Boy Advance link cable|Game Boy Advance Cable]], which is used in the same manner as with the GameCube; however, this feature can only be accessed on select GameCube titles which previously utilized it.

There are also a few limitations in the backward compatibility. For example, online and LAN features of certain GameCube games were not available since the Wii does not have serial ports for the [[GameCube Broadband Adapter and Modem Adapter]].<ref>((Cite web|url=https://www.gamespot.com/articles/why-are-current-consoles-not-backward-compatible/1100-6426818/|title=Why Are Current Consoles Not Backward Compatible?|access-date=2021-06-07|archive-date=2018-02-10|archive-url=https://web.archive.org/web/20180210120916/https://www.gamespot.com/articles/why-are-current-consoles-not-backward-compatible/1100-6426818/|url-status=live))</ref> The Wii uses a proprietary port for video output, and is incompatible with all GameCube audio/video cables ([[composite video]], [[S-Video]], [[component video]] and RGB [[SCART]]). The console also lacks the GameCube footprint and high-speed port needed for [[Game Boy Player]] support.<ref name=CNETFAQ>((cite web|url=http://reviews.cnet.com/4520-10166_7-6676348-1.html|title=Which of my older video games will work on the new consoles?|date=December 12, 2006|first=John|last=Falcone|publisher=CNET|access-date=September 13, 2012|archive-date=October 7, 2012|archive-url=https://web.archive.org/web/20121007005205/http://reviews.cnet.com/4520-10166_7-6676348-1.html|url-status=live))</ref> Furthermore, only GameCube functions were available and only compatible memory cards and controllers could be used when playing a GameCube game. This is due to the fact that the Wii's internal memory would not save GameCube data.

Because of the original device's backward compatibility with earlier Nintendo products players can play older games on the console in addition to newer Wii game titles. However, [[South Korea]]n units lack GameCube backward compatibility.<ref name="Wii2.0">((cite web|url=http://www.destructoid.com/new-slim-wii-announced-won-t-play-gamecube-games-209100.phtml|publisher=Destructoid|work=Destructoid|title=New slim Wii announced, won't play GameCube games|date=17 August 2011 |access-date=August 17, 2011|archive-date=September 1, 2011|archive-url=https://web.archive.org/web/20110901210331/http://www.destructoid.com/new-slim-wii-announced-won-t-play-gamecube-games-209100.phtml|url-status=live))</ref><ref name=GameSpotKr>((cite web|url=http://www.gamespot.co.kr/wii/news/0,39051458,39400693-39098642p,00.htm |archive-url=https://web.archive.org/web/20080618070527/http://www.gamespot.co.kr/wii/news/0%2C39051458%2C39400693-39098642p%2C00.htm |archive-date=June 18, 2008 |title=한국판 Wii, 타 국가게임 '사용불가' |author=김민규 기자 |publisher=[[GameSpot]] |language=ko |date=April 14, 2008 |access-date=September 25, 2008 |url-status=dead ))</ref> Also, the redesigned Wii Family Edition and Wii Mini, launched in 2011 and 2013 respectively, had this compatibility stripped out.<ref name="Wii2.0" /> Nevertheless, there is another service called [[Virtual Console]] which allow users to download older games from prior Nintendo platforms (namely the [[Nintendo Entertainment System]], [[Super Nintendo Entertainment System|Super NES]] and [[Nintendo 64]]) onto their Wii console, as well as games from non-Nintendo platforms such as the [[Sega Genesis|Genesis]] and [[TurboGrafx-16]].

==List of additional Channels==
This is a list of new Wii Channels released beyond the four initial Channels (i.e. Disc Channel, Mii Channel, Photo Channel and Wii Shop Channel) included in the original consoles. The News Channel and the Forecast Channel were released as part of system updates so separate downloads were not required. As of January 30, 2019, all channels listed below have been discontinued with the exception of the Wii Fit Channel and the Internet Channel.

{| class="wikitable sortable" border="1" 
|+ Additional Wii Channels
|-
!width="280"|New channels added
!width=100|Regions
!width=100|Download
!Released
!Discontinued
!Ref
|-
|[[Amazon Instant Video]] Channel
[[LoveFilm]]
|align=center| ((flagicon|US)) ((flagicon|UK)) ((flagicon|Germany))
|align=center|((Y))
|<span style="display:none">2013-01-17</span> January 17, 2013
|January 30, 2019
|<ref>((Cite web |last=McGlaun |first=Shane |date=December 4, 2012 |title=Amazon Lovefilm Service Launches On Nintendo Wii |url=https://www.slashgear.com/amazon-lovefilm-service-launches-on-nintendo-wii-04259407/ |access-date=February 23, 2022 |website=SlashGear.com |language=en-US))</ref><ref>((Citation |title=Wii: Wii Channels - LOVEFiLM |url=https://www.youtube.com/watch?v=mR6oN6YviOo |language=en |access-date=February 23, 2022))</ref><ref>((Cite web |title=Nintendo Support: Amazon Instant Video Discontinuation on Wii |url=https://en-americas-support.nintendo.com/app/answers/detail/a_id/28407/~/amazon-instant-video-discontinuation-on-wii |access-date=February 23, 2022 |website=en-americas-support.nintendo.com))</ref>
|-
|[[BBC iPlayer]] Channel
|align=center| ((flagicon|UK))
|align=center|((Y))
|<span style="display:none">2009-11-18</span> November 18, 2009
|February 10, 2015
|<ref>((Cite news |date=November 13, 2009 |title=BBC iPlayer becomes Wii Channel |language=en |work=MCV |url=https://www.mcvuk.com/business-news/bbc-iplayer-becomes-wii-channel/ |access-date=February 23, 2022 |issn=1469-4832))</ref><ref>((Cite web |last=McMullen |first=Chris |date=January 16, 2017 |title=BBC iPlayer Discontinued on Wii U |url=https://www.gamespew.com/2017/01/bbc-iplayer-discontinued-on-the-wii-u/ |access-date=February 22, 2022 |website=GameSpew |language=en-GB))</ref><ref>((Cite web |title=BBC iPlayer Wii Channel |url=https://www.nintendo.co.uk/Wii/Wii-Channels/BBC-iPlayer-Wii-Channel/BBC-iPlayer-Wii-Channel-627956.html |access-date=February 23, 2022 |website=Nintendo of Europe GmbH |language=en-GB))</ref>
|-
|[[Check Mii Out Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2007-11-12</span> November 12, 2007
|June 28, 2013
|
|-
|[[Crunchyroll]] Channel
|align=center| ((flagicon|US)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2015-10-15</span> October 15, 2015
|May 5, 2017
|<ref>((Cite web |last=Luster |first=Joseph |title=Crunchyroll App Now Available on Nintendo Wii |url=https://www.crunchyroll.com/anime-news/2015/10/15-1/crunchyroll-app-now-available-on-nintendo-wii |access-date=February 23, 2022 |website=Crunchyroll |language=en-us))</ref>
|-
|[[Jam with the Band|Jam with the Band: Live Channel]]
|align=center| ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2008-06-26</span> June 26, 2008
|((n/a|Permanent channel))
|
|-
|[[Wii Menu#Demae Channel|Demae Channel]]
|align=center| ((flagicon|Japan))
|align=center|((Y))
|<span style="display:none">2009-05-26</span> May 26, 2009
|March 31, 2017
|
|-
|[[Wii Menu#Digicam Print Channel|Digicam Print Channel]]
|align=center| ((flagicon|Japan))
|align=center|((Y))
|<span style="display:none">2008-07-23</span> July 23, 2008
|June 28, 2013
|
|-
|[[Everybody Votes Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2007-02-13</span> February 13, 2007
|June 28, 2013
|<ref name="N-Sider.com">((cite web |url=http://www.n-sider.com/newsview.php?type=story&storyid=2637 |title=Everybody Votes Channel now available |publisher=N-Sider.com |date=2007-02-14 |access-date=2009-01-20 |archive-date=2007-10-21 |archive-url=https://web.archive.org/web/20071021152226/http://www.n-sider.com/newsview.php?type=story&storyid=2637 |url-status=live ))</ref>
|-
|[[Wii Menu#Forecast Channel|Forecast Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((N))
|<span style="display:none">2006-12-19</span> December 19, 2006
|June 28, 2013
|
|-
|[[Hulu|Hulu Plus]] Channel
|align=center| ((flagicon|USA))
|align=center|((Y))
|<span style="display:none">2012-02-16</span> February 16, 2012
|January 30, 2019
|<ref>((Cite web |title=Watch Thousands of Shows and Movies |url=https://www.hulu.com/start |access-date=February 22, 2022 |website=Hulu |language=en-US))</ref><ref>((Cite web |last=John |first=Steven |title=There's no way to download Hulu on Nintendo Wii systems anymore — here are some alternatives |url=https://www.businessinsider.com/how-to-download-hulu-on-wii |access-date=February 22, 2022 |website=Business Insider |language=en-US))</ref>
|-
|[[Wii Menu#Internet Channel|Internet Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2007-04-11</span> April 11, 2007
|((n/a|Permanent channel))
|<ref name=autogenerated3>((cite web |url=http://www.n-sider.com/newsview.php?type=story&storyid=2710 |title=Final Internet Channel now available |publisher=N-Sider.com |date=2007-04-11 |access-date=2009-01-20 |archive-date=2007-10-21 |archive-url=https://web.archive.org/web/20071021152231/http://www.n-sider.com/newsview.php?type=story&storyid=2710 |url-status=live ))</ref>
|-
|[[Wii Menu#Mario Kart Channel|Mario Kart Channel]]
|align=center| ((flagicon|Japan)) ((flagicon|Europe)) ((flagicon|USA))
|align=center|((N))
|<span style="display:none">2008-04-10</span> April 10, 2008 - April 27, 2008
|Reduced functionality after May 20, 2014
|
|-
|[[Metroid Prime 3: Corruption#Release|Metroid Prime 3 Preview Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2007-08-10</span> August 10, 2007
|2008
|
|-
|[[Netflix]] Channel
|align=center| ((flagicon|USA)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2010-10-18</span> October 18, 2010 - January 9, 2012
|January 30, 2019
|<ref>((Cite web |title=Watch TV episodes and movies streamed from Netflix using your Wii console |url=https://www.nintendo.com/consumer/systems/wii/en_na/netflix/print.jsp |access-date=February 22, 2022 |website=www.nintendo.com))</ref><ref>((Cite web |date=November 15, 2018 |title=Netflix to Stop Working on the Nintendo Wii |url=https://www.makeuseof.com/tag/netflix-working-nintendo-wii/ |access-date=February 22, 2022 |website=MUO |language=en-US))</ref><ref>((Cite web |date=November 9, 2018 |title=Wii will no longer support Netflix or other video streaming services come January 31 |url=https://www.vg247.com/wii-ending-streaming-support-netflix |access-date=February 23, 2022 |website=VG247 |language=en))</ref>
|-
|[[Wii Menu#News Channel|News Channel]]
|align=center|  ((flagicon|USA)) ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((N))
|<span style="display:none">2007-01-26</span> January 26, 2007
|June 28, 2013
|
|-
|[[Wii Menu#Nintendo Channel|Nintendo Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Japan)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2007-11-27</span> November 27, 2007 - May 30, 2008
|June 28, 2013
|
|-
|[[Television Friend Channel G-Guide for Wii|Television Friend Channel]]
|align=center| ((flagicon|Japan))
|align=center|((Y))
|<span style="display:none">2008-03-04</span> March 4, 2008
|July 24, 2011
|
|-
|[[Wii Menu#Today and Tomorrow Channel|Today and Tomorrow Channel]]
|align=center| ((flagicon|Japan)) ((flagicon|Europe)) ((flagicon|South Korea))
|align=center|((Y))
|<span style="display:none">2008-12-02</span> December 2, 2008 - September 9, 2009
|((n/a|Permanent channel, no longer obtainable))
|
|-
|[[Wii Menu#Wii Fit/Wii Fit Plus Channel|Wii Fit Channel]]
|align=center| ((flagicon|Japan)) ((flagicon|Europe)) ((flagicon|USA))
|align=center|((N)) (except ((flagicon|Japan)))
|<span style="display:none">2007-12-01</span> December 1, 2007 - May 21, 2008
|((n/a|Permanent channel))
|
|-
|[[Wii no Ma]]
|align=center| ((flagicon|Japan))
|align=center|((Y))
|<span style="display:none">2009-05-01</span> May 1, 2009
|April 30, 2012
|
|-
|[[Wii Menu#Wii Speak Channel|Wii Speak Channel]]
|align=center| ((flagicon|USA)) ((flagicon|Europe))
|align=center|((Y))
|<span style="display:none">2008-12-05</span> December 5, 2008
|May 20, 2014
|
|-
|[[YouTube]] Channel
|align=center| ((flagicon|USA)) ((flagicon|Europe)) ((flagicon|Japan))
|align=center|((Y))
|<span style="display:none">2012-11-15</span> November 15, 2012 - December 10, 2012
|June 30, 2017
|
|}

== History of updates ==
System version 1.0 was released on launch day, and was designed mainly for offline use, as connecting to the internet would trigger an update prompt to install 2.0.<ref name="WIIBREW20">((cite web|url=https://wiibrew.org/wiki/2.0|title=2.0|website=WiiBrew|access-date=2021-09-13))</ref> For a while after that, the Wii received new features such as the Forecast Channel,<ref name="WIIBREW20" /> as well as bug fixes.<ref>((cite web|url=https://wiibrew.org/wiki/2.2|website=WiiBrew|title=2.2|access-date=2021-09-13))</ref>

Some of these updates also included fixes to block the early forms of [[homebrew (video games)|homebrew]], the first of which was an SSL issue in the [[Wii Shop Channel]].<ref>((cite web|url=http://mozy.org/wii/|title=Here Wii Go Again|author=roto|access-date=2021-09-13))</ref> Later in 2007, Nintendo added code to block the [[GameCube]] [[Action Replay]], although this update was bundled with several other features in the 3.0 update.

A week after [[Wii Freeloader]] released, Nintendo released an update containing a new IOS with the bug exploited by Freeloader fixed, although this new IOS was not used by the Wii Menu.<ref>((cite web|url=https://wiibrew.org/w/index.php?title=IOS37&oldid=6145|title=IOS37|website=WiiBrew|author=bushing|date=2008-03-21|access-date=2021-09-13))</ref> Later that year, Nintendo released a new Wii Menu that copied this fix to the IOS user by the Wii Menu. In addition, code was added to the Wii Menu to delete the primary homebrew entrypoint on every boot, although this code was very buggy and was easily bypassed.<ref>((cite web|url=https://hackmii.com/2008/06/wii-menu-tp-hack-killer-analysis/|author=bushing|title=Wii menu TP-hack-killer analysis|website=HackMii|date=2008-06-17|access-date=2021-09-13))</ref> Nintendo also patched the hole used to extract the private encryption keys of the Wii, and finally made a small change to the Mii Channel to convince people to update.<ref>((cite web|url=https://hackmii.com/2008/06/june-16-wii-update/|author=bushing|title=June 16 Wii update|website=HackMii|date=2008-06-16|access-date=2021-09-13))</ref>

Nintendo's next few updates made similar small changes to various channels, and one of them copied the fix for the previous IOS bug to every IOS, as well as a few other exploit fixes.<ref>((cite web|url=https://wiibrew.org/wiki/3.3rev03|title=3.3rev03|website=WiiBrew|access-date=2021-09-13))</ref> A few weeks later, Nintendo ported these new fixes to every IOS, made a failed attempt to block a specific homebrew IOS,<ref>((cite web|url=https://wiibrew.org/wiki/3.4|title=3.4|website=WiiBrew|access-date=2021-09-13))</ref> and made their second attempt at fixing the main homebrew entrypoint.<ref>((cite web|url=https://hackmii.com/2008/11/rise-of-the-dead/|title=Rise of the Dead|date=2008-11-24|author=marcan|website=HackMii|access-date=2021-09-13))</ref> This attempt at stopping the homebrew entrypoint was then superseded by a successful attempt in 2009, along with other IOS fixes, and some features.<ref>((cite web|url=https://hackmii.com/2009/03/system-menu-40-rundown/|author=marcan|title=System Menu 4.0 Rundown|date=2009-03-25|access-date=2021-09-13))</ref>

Later that year, Nintendo released another homebrew-blocking update, but unlike the previous updates, it offered no new features; instead, it updated the [[Wii Shop Channel]] to require the new version.<ref name="HACKMII42">((cite web|url=https://hackmii.com/2009/09/wii-menu-4-2-a-lack-of-imagination/|title=Wii Menu 4.2: a lack of imagination|author=bushing|website=HackMii|date=2009-09-29|access-date=2021-09-13))</ref> In addition to fixing homebrew bugs, it aggressively checks for the Homebrew Channel and deletes it if it is present,<ref>((cite web|url=https://hackmii.com/2009/09/silly_games/|title=Silly games|author=dhewg|website=HackMii|date=2009-09-30|access-date=2021-09-13))</ref> replaced several IOSes used by homebrew with nonfunctional versions,<ref name="HACKMII42" /> and updated a [[bootloader]] to overwrite the one used by homebrew, unexpectedly causing many consoles to refuse to boot.<ref>((cite web|url=https://hackmii.com/2009/11/updates-and-bricking/|title=updates and bricking|website=HackMii|author=bushing|date=2009-11-01|access-date=2021-09-13))</ref> Two similar updates were then released throughout 2010, although the only attempts to stop Wii homebrew past that were in the [[Wii U]]'s Wii Mode feature.

The final update delivered in PAL and American regions added support to transfer content to the Wii U. However, two updates were released in Japan past this point that only affected ''[[Dragon Quest X]]'' players, solely updating the IOS used by ''Dragon Quest X''.

== See also ==
* [[Nintendo Wi-Fi Connection]]
* [[WiiConnect24]]
* [[Wii Shop Channel]]

'''Other gaming platforms from Nintendo:'''
* [[Nintendo 3DS system software]]
* [[Nintendo DSi system software]]
* [[Wii U system software]]
* [[Nintendo Switch system software]]

'''Other gaming platforms from the [[Eighth generation of video game consoles|next generation]]:'''
* [[PlayStation 4 system software]]
* [[PlayStation Vita system software]]
* [[Xbox One system software]]

'''Other gaming platforms from [[Seventh generation of video game consoles|this generation]]:'''
* [[PlayStation 3 system software]]
* [[PlayStation Portable system software]]
* [[Xbox 360 system software]]

== References ==
((reflist|2))

== External links ==
*[https://www.nintendo.com/consumer/systems/wii/en_na/systemMenuFeatures.jsp Wii System Menu and Feature Updates]
*[http://www.wiibrew.org/wiki/Homebrew_status Site documenting all updates during an update and how they affect homebrew and other hacks]

((Wii))
((Video game console system software))

[[Category:Wii]]
[[Category:Game console operating systems]]
[[Category:Discontinued operating systems]]
[[Category:Proprietary operating systems]]

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