Here’s a explaining what WFC Patcher for Android is, how it works, its legal/ethical implications, and practical considerations. What is WFC Patcher? WFC Patcher (sometimes called Wii Flow Commander Patcher or Wii U USB Helper’s WFC module ) is an Android tool originally designed to patch Wii and Nintendo DS ROMs to restore online functionality after Nintendo shut down the official Nintendo Wi-Fi Connection (WFC) services in 2014.