Perhaps Levi Loader is a USB loader for the Wii that uses a different method to load games, maybe with better features or different dependencies. Some USB loaders require a soft mod (like Bannerbomb with Hermes vWii exploit) or hardware mods. So Levi Loader might require a specific mod.
But I need to be careful about the accuracy. Suppose I’m not entirely sure about Levi Loader. Maybe I'm confusing it with another loader. Let me think. Some sources say that the main ways to run homebrew on Wii are through the Homebrew Channel, which uses the Disc Channel exploit, or by using a softmod with a loader. There's also hardware mod chips, but those are for modded hardware. levi loader wii
If Levi Loader exists, it might be an alternative loader that offers specific features. Maybe it's a frontend for running apps, or maybe it allows running games from USB or other storage. Since I’m not familiar with Levi Loader specifically, I should either verify its existence or perhaps assume the user meant a different loader. Alternatively, maybe it's a lesser-known one. Perhaps Levi Loader is a USB loader for