Years later, the user's SD card fails. Their Wii is now bricked from a bad theme installation, and their original backup is gone. In desperation, they search for a "Wii NAND backup download"
The only "Wii NAND backup" worth having is the one you create yourself with BootMii. It takes 45 minutes, a cheap SD card, and a bit of patience. In return, you get a digital lifeline that can resurrect your console from any software disaster. Wii Nand Backup Download