IOS3

IOS3
Release
Initial	122E
Technical info
Type	Specialized IOS
Status	Private Corporate IOS
Stub variant	2008

IOS3 is a stub IOS present in RVL-CPU-20 Wiis, whose functional version used by the Data Check and Log Check Helper, as well as the dummy titles installed by the Wii Backup Disc to install the development certificates. No console has been found with a functional version, and the functional version is more than 16 versions behind the state at the factory, so partial bits cannot be recovered either.

IOS3 and IOS4 are also the only two IOSes stubbed on the Wii mini, since most IOSes will hang on the Wii mini due to the WiFi module not responding.

v65280 starts at CID 0x10 (16), meaning there were at least 16 versions before due to old IOSes not having build tags, and probably more because IOS content IDs used to be formatted as -CAFExxxx. Alternatively, there may have been one monolithic version and one modular version using the release CID scheme.

IOS3 is often set in the TMD of dummy NAND titles, but all dummy disc partitions (e.g. update partitions and Drive Test Disc) use IOS4. It is therefore possible that IOS3 did not have a DI module.

Titles using this IOS

• Data Check and Log Check helper
• dummy-cls.wad
• dummy-loc.wad

Version history

Version	Signing bug?	/dev/flash access?	ES_Identify?	STM Release Exploit?	STM IOCTL overflow?	SDI register index bug?	Notes
?	?	?	?	?	?	?	Used in the factory by Data Check and Log Check Helper.
v65280	No	No	No	N/A	N/A	N/A	Stub IOS present on RVL-CPU-20 and later. Not available on NUS.