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System Update3.3rev03
Technical info
TypeHybrid IOS (Common IOS and System Menu IOS)

IOS9 was used by System Menu 1.0U (other regions used IOS10) and launch/near-launch games. It was also found on Wiis with the Prelaunch System Menu installed. Such consoles were likely for use as game store kiosks. It also comes preburnt on consoles before RVL-CPU-20, although on RVL-CPU-20 and later, it is instead installed by 122E.

IOS9 was the only active IOS that had one content; all other IOSes had a content containing build info, and a content containing the actual ARM binary. When IOS254 was released to overwrite PatchMii, it inherited this unusual property. IOS9 was given a separate content for its build tag in 4.2rev04, and IOS254 was stubbed in 4.3rev02, leaving all IOSes with a separate content for build info.

This IOS only has one LED pattern: blinking.

Titles using this IOS

  • System Menu 1.0U
  • Wii Sports
  • Wii Play
  • The Legend of Zelda: Twilight Princess
  • WarioWare: Smooth Moves

Version history

Version Signing bug? /dev/flash access? ES_Identify? STM Release Exploit? Notes
v1 Yes Yes Yes Yes Found only on Wiis with Prelaunch System Menu installed and Wiis at the factory.
v516 Yes Yes Yes Yes Not available on NUS. Distributed with early games and preinstalled on launch Wiis.
v518 Yes Yes Yes Yes Found only on Korean Wiis.
v520 No No No Yes
v521 No No No No
v778 No No No No
v1034 No No No No Split into a build tag file and an executable file
v1290 No No No No Only found on vWii and newer RVL-101 units.
v26890 No No No No Only found on Wii mini