Things You'll Need
Instructions
Download and burn the Wiikey 1.9s update software to a disc. Also download the Wiikey 1.9s config software and place it on a separate disc. (See Resources.) You can use a CD burning program like Nero to accomplish this task.
Turn on your Wii and insert the 1.9s update disc. Begin running the update, but keep watch over the percentage completed.
Unplug the Wii when the update reaches 70 percent. This will corrupt the Wiikey data and effectively disable it, making it invisible to the Wii.
Plug the Wii back in and restart the system. Insert any game or begin normal software updates at this time. The Wiikey will remain disabled, ensuring that the system won't lock up during standard game play or firmware upgrades.
Reactivate the Wiikey by inserting and running the 1.9s config disc in your Wii. Once it has completed installation, hold down the "reset" key of the Wii and wait three minutes. Turn the Wii back on, and the Wiikey will again be active.