View source for IOS21

{{Infobox IOS
| version = v1039
| type = common
| status = active
| base = [[IOS19]]
| forks = [[IOS22]]<br />[[IOS28]]
}}

'''IOS21''' was an IOS used by third party games that has an updated [[STM]] module. It also contains a copy of the [[NAND Boot Program]] in content 1 in some versions, identical to the one in [[IOS15]]; this was most likely to apply an urgent patch to the Internet Channel.

Many games such as Wii Sports were also rereleased under this IOS with a newer strap screen, probably in response to TVs getting smashed.

This [[IOS]] was used by some versions of DataChk.wad, a factory title, as well as NDEV Menu v1.11.