However, I can’t provide direct links to game downloads (ROMs, WUD/WUX/RPX files) or updates because those are copyrighted and sharing them violates piracy policies.
I understand you're looking for a guide to (often called New Super Mario Bros. U + New Super Luigi U ) for Cemu (Wii U emulator) — including updates and download info. New Super Mario Bros Wii U Cemu UPD Download
