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Technical info
TypeSpecialized IOS
StatusPrivate Corporate IOS

IOS19 is an unreleased IOS only known to exist from a WiiConnect24 user agent in IOS21 and IOS22 of WiiConnect24/FW_19.2.1. It was built hours before IOS21, and contains updated versions of KD, WD, and NCD. These updates are present in both IOS21 and IOS22, but IOS28 contains new versions.

IOS19v513 most likely came from IOS17v512 due to the version number, and is the parent of IOS21. IOS22 seems to have come from both IOS21 and IOS28, not IOS19.

The other WiiConnect24 user agent in IOS19 is version It is likely that the FC versions silently changed to normal minor versions, since the FC versions were effectively being used as release versions at this point.

Version history

Version Signing bug? /dev/flash access? ES_Identify? STM Release Exploit? STM IOCTL overflow? SDI register index bug? Notes
v513 Yes Yes Yes Yes Yes Yes