This update was an end-of-life bug fix to address a major security vulnerability called ENLBufferPwn , which could allow hackers to take control of systems during online play .
As of , Nintendo released the final update (v2.12.1) for Splatoon on Wii U .
While Nintendo officially ended online play for the Nintendo Network on April 8, 2024 , users can still play online via community-driven projects like Pretendo Network . Setting Up on Wii U (Loadiine GX2)
To run the game on an actual console using an SD card, follow this directory structure: [Wii U] How To Set Up Games With Loadiine
You must have this update installed to access any remaining official online features .