Ok, its another work around for the Wiikey Setup Disc.
Basically, use my modified wiikey setup disc iso creator to create the ISO for your region.
In firmware 3.0x, boot using this disc.
Once the wiikey disc has booted and you see the message "Please insert the Wiikey Base Disc", eject the disc and replace with the Official Wiikey 1.2 setup disc and hit the reset button or a button on the controller.
Done...
Enjoy wiikey setup on Firmware 3.0x
http://rapidshare.com/files/48731676/config1.3.zip.html