Ah, ok. I was confused, because the tutorial mentioned this:
4] Install custom IOS 202[57], 222[38], 223[37] & 224[57] [Hermes v5], 246[37], 247[38], 248[58], 249[56] & 250[57] [Waninkoko v21 d2x v6] to your wii.
Maybe this should be changed?
But thanks!
Bart