Things You'll Need
Instructions
Download the USB Loader GX software from the official website. Click on the "Downloads" link and select the "Latest All in One Package" for the complete program.
Save the files to your desktop or in a location you can easily access on your computer.
Remove the SD card from your Wii. Insert it into an SD card slot on your computer. If your computer does not have an SD card slot, use a USB SD card reader to insert the card.
Open the root of the SD card from "My Computer." Select the "Apps" folder. Drag and drop all of the downloaded files into this folder.
Remove the SD card and insert it back into the Wii. Power on the Wii console.
Select the "Wii Homebrew Channel." Scroll through the applications and select the "USB Loader GX" from the list. Press "A" to load it.