Most advanced users in the homebrew community do not rely on a single "master key" for the Helper application but rather utilize a keys.txt file or source a database from a trusted community repository (often found on forums like GBATemp). However, the legal status of these keys is complicated.
Here is why that step is mandatory:
: Ensure you include the "s" in "titlekeys" (e.g., titlekeys.ovh vs titlekey.ovh ). Title Key For Wii U Usb Helper