Error 003
Description
The so called Error 003 occurs when a Korean Wii gets region switched to a different region and then updated to 4.2 via the online update.
Technical cause
System menu 4.2x calls a new ES Ioctlv(0x45) which got added in IOS70 on other IOS' this Ioctlv always returns -1017.
If the korean-common-key is present IOS70 will return 0, which will then trigger the error in the system menu.
Fixing
There is currently no way known to fix this error.