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. | 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. |