If a Wii has been improperly modded or a system file has been deleted, "wad" files like this one are used to manually reinstall missing components. Having a clean copy of v5661 can help recover a console that is malfunctioning due to a missing system layer. How is it Installed?
The file is a critical system file for the Nintendo Wii Go to product viewer dialog for this item. ios56-64-v5661.wad