Changes

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! scope="row"| IOS31

! scope="row"| IOS31

| Used by the current versions of some channels such as Weather/News/Mii/Photo 1.1.

| Used by the current versions of some channels such as Forecast/News/Mii/Photo 1.1.

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! scope="row"| IOS33

! scope="row"| IOS33

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! scope="row"| IOS55

! scope="row"| IOS55

| IOS used often by newer disc games, including changes in the DI module, Wii Speak support, and support for Logitech USB steering wheels. It was frequently either used or required but not used by games due to its wide array of features; the Wii Speak Channel required and installed it along with IOS38, although it's unknown which one was actually set in the channel's TMD. One particularly notable example of a game which requires it is The Conduit, a Wii game which uses Wii Speak and requires the IOS as a result. It is also required by Need for Speed: Undercover, presumably due to its USB steering wheel peripheral. It is also used by first party games, including Wii Sports Result. It is notable for causing behavior where, if a game which requires the IOS, but does not specify it in its TMD is launched without the IOS being present, Error 002 will trigger. In addition, Monster Hunter Tri reportedly needs v5406 to work.

| IOS used often by newer disc games, including changes in the DI module, Wii Speak support, and support for Logitech USB steering wheels. It was frequently either used or required but not used by games due to its wide array of features; the Wii Speak Channel required and installed it along with IOS38, although it's unknown which one was actually set in the channel's TMD. One particularly notable example of a game which requires it is The Conduit, a Wii game which uses Wii Speak and requires the IOS as a result. It is also required by Need for Speed: Undercover, presumably due to its USB steering wheel peripheral. It is also used by first party games, including Wii Sports Resort. It is notable for causing behavior where, if a game which requires the IOS, but does not specify it in its TMD is launched without the IOS being present, Error 002 will trigger. In addition, Monster Hunter Tri reportedly needs v5406 to work.

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! scope="row"| IOS56

! scope="row"| IOS56

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! scope="row"| IOS62

! scope="row"| IOS62

| Released along with Wii Shop v21, but is not used by it; instead, it's used for the Wii U Transfer Tool. Released November 6, 2012, before the Wii U launch date. (It's unknown if this IOS is used by both sides of the tool)

| Released along with Wii Shop v21, but is not used by it; instead, it's used for the both the Wii U Transfer and Wii System Transfer Tool. Released November 6, 2012, before the Wii U launch date.

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! scope="row"| IOS70

! scope="row"| IOS70

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! scope="row"| IOS223

! scope="row"| IOS223

| Same as above.

| Same as above.

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! scope="row"| IOS250

! scope="row"| IOS250

| Same as above.

| Same as above.

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