Easy way to update modded Wii?

Hey guys, I have a Wii modded with a wii key version 1. Im looking for an easy tutorial to update it to its latest version so that it will play all the games that are out right now. Anyone got an easy tutorial handy that I could follow. Thanks dudes.

Go here: http://www.wiikey.cn/legacy/
Download the installation manual first then the latest version according to your region and do as the manual say...