Make sure that you have the USB Stick in the bottom port, In Homebrew select the USB loader GX and open it by pressing Button A, then click load. (if you have one of our Wii’s then you can simply open it from the home screen)

Then you should be presented with all the Wii games on the USB stick.

Just click the game and click load, now play

User Interface
There are multiple buttons in the USB Loader GX interface.
Star – Shows games that you have marked as “favorites”.
Search – Lets you search for games by name.
Sort – Cycles through sorting methods for games.
Platform – Choose to sort games by platform.
Category – Sorts games by category.
List – Shows games in a list view.
Multi-Cover View – Shows games in a multi-cover view.
Cover Carousel View – Shows games in a carousel view.
Wii Menu View – Shows games in a Wii Menu view.
Parental Control – Locks USB Loader GX.
Disc – Loads a game via disc.
Pressing any game will allow you to play the game by pressing “Start”.
There are also other buttons:
Icon – “Install” a game, i.e. loading it from disc and dumping it.
On the middle of the bottom of the screen, you can see how much space is free on your USB drive and how many games you have.
To add and remove Wii games from your system you will need computer and WBFS Manager which takes iso images and converts them to Wii format then adds them to a USB stick.
Backing up Games
Alternatively if you have space on your drive or USB stick, USB loader will ask you if you want to install the game when you insert a new game disc.

Once the disc is inserted, a pop-up will appear. By clicking Install, the backup process will begin.

The following pop-up appears and asks to continue. Click on OK. Note: The size of the file size being saved is displayed on this screen. In this case, 3.34 GB will be taken up on the hard drive.
Following right after, you will see the backup process in action. The amount of time it takes to backup the game depends on the size of the file. If you shake the Wii Remote, it speeds up the process.
The game will appear with no cover art, and this is easily fixed by accessing the Display as a List option at the top of the screen (if it is your first backup, the channel may already be on the appropriate menu) and click on the box art that says No Image.