Updating modded wii
If the Wii is new and you have no messages, create a memo on the Wii.
To create a memo, select the envelope inside a circle located in the lower-right corner of the main menu.
If you're using Bannerbomb, use the same procedure to install DVDx, which uses the Wii as a DVD player (if you install media-playing software such as MPlayer CE). After you exit, an indicator shows that the SD card is loading.
When loading is complete, the Homebrew Channel appear.
Be aware, too, that Nintendo updates to the Wii may break your Homebrew Channel (or brick your Wii), so don't update the Wii system after installing Homebrew.
To prevent Nintendo from automatically updating your system, turn off Wii Connect24.
To do so, select Options, then select Wii Settings. Also, prevent new games from attempting to update the system.
The method you use to install homebrew software varies according to your Wii console's operating system.
If you have a new Wii, this procedure reportedly won't work until you have at least one message in your Wii Message Board.In the Wii Message Board, select create message, select memo, then write and post a memo.On the Wii console, open the door next to the game disc slot to access the SD card slot.If you copied homebrew applications into the apps folder of the SD card, you'll see them here; otherwise, you'll see a screen with bubbles floating on it.Press home on the remote, then select exit to go to the main Wii menu.