Is there any way to edit my Miis on my computer?
Indeed, it appears that intrepid individuals have sought out to do this exact thing. If you have bluetooth setup on your PC, you can use Mii Mega-mall (
http://www.miimall.com ) and the Mii Editor (
http://www.miieditor.com ) to transfer your Miis to your computer, edit them to match your new Wii (via MAC address), and send them back to the Wii as being editable. More information about that can be found in the Mii Editor FAQ.
Thank you Pale over at NWR for this information.
Shecky further adds: It probably makes the Bluetooth computer look like a Wii Remote. And you can send a Mii to a Wii Remote as part of the Mii channel. You can even pull Mii's off the remote.
I sent my Wii in for repair, and when I got it back, I cannot edit my Miis! Nintendo transferred them to what appears to be an entirely new Wii, and it’s telling me that I cannot edit a Mii I didn’t create! Why must you toy with me so, Nintendo?
Basically it’s like you no longer have rights to the Miis in question. Use the solution above. I realize that’s not the best answer in the world, but it’s either try that or live in your misery.