IOS12 is the oldest known version of IOS. It was probably developed to be used in Wii Demos and product showcases. It is only known to have one function, which is to control the Bluetooth functonality of the Wii and Wiimote.
|Version||Signing bug?||STM Release Exploit?||Notes|
|v6||Yes||Yes||First release. June 4, 2006|