Homebrew refers to software written by hobbyist developers that runs on a closed console without official endorsement. Custom firmware (CFW) is a modified system image that disables signature checks and provides a platform for homebrew execution. While homebrew can be used for legitimate purposes (e.g., preservation, indie development), CFW is also commonly employed to run pirated games, creating a contentious legal landscape.
The real exploit runs entirely on the Wii U using an SD card. haxchi download