NEVER replace IOS on vWii.
even installing a wad of the same version is bad if you didn't make a proper dump of your IOS first.
I didn't know RB3 required a specific IOS version.
All games use the version they find in the requested slot. and if it's requesting a specific version, it should work with newer version (or else the game is badly coded, you can't play retail/official game on WiiU?)