well first you need some dvds >.<
go to wiikey.cn and download the latest update thing by clicking on resources
after downloading that download imgburn if you don't already have it
burn the .iso file to the disc using imgburn at 4x speed
insert in your wii and update
i think you need to use a gamecube controller
and you can also create a config disc from the same site in resources also, this lets you change things such as region free and stuff (even though the region free doesn't work very well >.