If you're legitimately importing out of region games, then use Gecko Loader, which is an open source import loader that runs out of the HBC or Twilight Hack. It'll automatically bypass the update partition so you don't have to worry about semi-bricking your wii.
There is a duplicate channel remover, but I believe it's made by Wanikoko and quite honestly I don't trust anything he's written within 10 feet of my wii.
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