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'''IOS21''' is most commonly used by third-party games. It also contains the [[NAND Boot Program]] developer tool, just like [[IOS15]]. Most debugging messages have been removed, though.
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'''IOS21''' is most commonly used by third-party games. It also contains some PowerPC binary in content 1, identical to the one in [[IOS15]]. Most debugging messages have been removed, though.
It probably had the connection fixes advertised for [[2.2]]. Many games such as Wii Sports were also rereleased under this IOS with a newer strap screen, probably in response to TVs getting smashed.
It probably had the connection fixes advertised for [[2.2]]. Many games such as Wii Sports were also rereleased under this IOS with a newer strap screen, probably in response to TVs getting smashed.