What is Wii softmod backup? Wii softmod backup enabling software is downloadable in zip files all over the internet which is then placed on an SD memory card that is used for the Wii console. Along with the many links for the software, there are also available downloads for the old Nintendo games which may not have been formatted for Wii use before which can be enjoyed with the ability to play backup games. The Wii homebrew installer has gifted Wii enthusiasts with not only a way to convert your console into an entertainment hub but the heavily sought after ability to provide a wii softmod backup game player.