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System Update3.3rev03
Technical info
TypeSpecialized IOS
Stub variant4.0

IOS51 was an IOS based on IOS37 used for the Wii Shop Channel that came with the October 23 update. Its modules are slightly older than those in the other 3.3rev03 IOSes, but they were the original modules used for stub IOSes. As of the System Menu 4.0 update, IOS51 itself was turned into a stub IOS, but not with these modules.

IOS51v4633 only differs from IOS50v4633 in the fact that IOS51v4633 has an FFSP module instead of an FSP module, but has the same version number, and that IOS51 has a USB_HID module instead of a KBD module. This probably means the System Menu-system channel IOS pairs are built from the same build script. The difference between these types of FS modules is not currently known, although FS(P) seems to be used by System Menu IOSes and monolithic IOSes, while FFS(P) is used by other IOSes.

Compared to IOS53, IOS51 seems to have a newer OHCI module (04/07/08 -> 08/13/08), a newer WD module (08/07/07 -> 08/04/08), a newer WL module (06/28/07 -> 08/04/08), and a newer SSL module (06/21/07 -> 02/27/08).

Titles using this IOS

  • Wii Shop Channel

Version history

Version Signing bug? /dev/flash access? ES_Identify? STM Release Exploit? STM IOCTL overflow? SDI register index bug? Notes
v4633 No No No Yes Yes Yes First release. October 23, 2008.
v4864 No No No N/A N/A N/A Stub IOS