If you have no pre-installed brick protection (Priiloader/BootMii),
If you previously modded your Wii, you might have safety nets already installed. Priiloader : Hold the fix bricked wii without nand files rar work
First, let’s clarify what a NAND backup is. The NAND chip inside your Wii stores the entire System Menu, IOS (Input/Output Systems), channels, and saved games. A nand.bin file (often compressed in a .rar archive via BootMii) is a perfect clone of that chip. If you previously modded your Wii
– it will not boot on your console and can destroy any remaining chance of recovery. IOS (Input/Output Systems)