If you have previously installed The Homebrew Channel, you can update it. If
this is the first time you are installing it, see README.txt for installation
instructions. The easiest way to update is using the built-in online update
functionality. Simply configure the WiFi network settings for your Wii for
proper Internet connectivity, and boot up the channel. If the connection is
established, you'll see an opaque white (not semitransparent) world icon
in the lower right corner, and an update prompt will automatically appear.
Accept it to begin downloading the update. If you cannot or do not want to
connect your Wii to the Internet, simply run the boot.elf file using any
homebrew booting method. For example, you can upload it using wiiload or
you can make a directory inside /apps (for example, /apps/Update) and copy
boot.elf there. Then, simply run it from the previous version of The Homebrew
Channel.