I've followed some tutorials that i found in google to mod a 4.2j black wii into a 4.2u wii

first, the region changer works fine and i've modded to a 4.2u wii, the softmod doesnt work and after ios downgrader, the apps in homebrew doesnt work anymore, it just give me a black screen and shut down my wii motes.
i've installed: preloader 0.30 , bootmii, the preloader is fine yet, but i dont take de hackmii installer to work again to remove any program or reinstall homebrew channel (homebrew screen is flipped now)

can anyone help me please!?

(Sorry for my porr english)