Things You'll Need
Instructions
Download "BootMii Installer" and "Bannerbomb" from their respective websites (see Resources). Unzip the contents of both files to your computer.
Rename "installer.elf" in the "Hackmii" folder to "boot.elf," and then copy the file onto the root of the SD card.
Copy the contents of the "Bannerbomb" folder to the root of the SD card.
Put the SD card into the Wii, then switch the console on.
Click the "Wii" icon, followed by "Data Management." Click the "Channels" option, and open the "SD Card" tab.
Click "Yes" when asked if you want to load "boot.elf." Press the "1" button on the Wii controller when the warning screen appears.
Press "A" on the Wii controller to continue, and then select "Install The Homebrew Channel." Once the "Homebrew Channel" is fully installed, restart the Wii. The softmod is now complete and homebrew software can be installed by going to the Homebrew Channel.