With the new release of Nintendo's 4.0 System Menu, Waninkoko has been hard at work and recently released a homebrew application for the Wii which in affect removes all of the blocks that the usual Nintendo Firmware contains. This app will download and install the new content in the v4.0 System Menu update, but still allows users to install wads, use homebrew channel and run backups.
This new update brings increased reading of SD cards and also adds a small SD channel to the system menu which allows users to load channels straight from the SD card. Pic below.