I downloaded the mike kernel from
Here then boot it with bootmii. (Wifi only works when booted with bootmii.) My bootmii is Boot2, but if yours is IOS then press home on teh HBC and click bootmii, It works as long as bootmii loads the kernel. (I have a 4.3 Wii and despite everything everyone says, Boot2 installed and works for me.) Now my wii boots whiite instead of wiimenu when sd is in. :D