You cannot install any System Menu WAD on any Wii. The version must match your console’s region, or you will cause a full brick (unusable console).
Before you even think about downloading or installing a System Menu WAD, . If not done exactly right, your Wii could become an expensive paperweight. To mitigate this risk, you should have the following safeguards in place:
Installing a System Menu WAD can "brick" your Wii if not done correctly. Ensure you have Priiloader or BootMii installed as brick protection first.