IOS4 was a very primitive IOS that was probably used during the manufacturing process. Consoles requiring the Wii Startup Disc also use IOS4 as the System Menu IOS. Not to be confused with that used on other products.
|Version||Signing bug?||STM Release Exploit?||Notes|
|v65280||No||No||Stub IOS released alongside October 23rd Wii Shop Channel update|