The forum post was buried on page six of a dead Nintendo modding site, dated 2012. The title was just a string of numbers, but the attachment was clear: SMG2_Beta_Disc.wad .
Typically used for small apps, system updates, or "Forwarders". A forwarder WAD creates a channel on your Wii home screen that launches the full game from an external SD card or USB drive. super mario galaxy 2 wad file free
: These are installer packages used to add individual channels (like the Homebrew Channel or Netflix) or system components (IOS) to the Wii menu. The forum post was buried on page six