I've tested some Korean ISOs with Trucha signer and wiitools, and all failed to decode.
I also think that the Common Key of Kor Wii is changed, but there is a rumor that US game worked on a modded Korean wii.
If a modded Korean wii can run game with other country code, it means the common key is...
To run Toki Tori PAL on NTSC-J Wii: (Almost general patch method if freethewads failed.)
Edit: 25/June
What you will need:
Generic Wii Patcher 1.1
wadpacker, wadunpacker (which is included in auto injectuwad v3)
common-key.bin
Getting started:
-Unzip all the tools to a folder called wiivc on...
1. Wait until sombody upload the vc.
2. Or... Get US version of zelda 64 wad, injectuwad japanese version zelda n64 rom to the wad and freethewads it!
(I've tested it on Jap version Wii.)
Bought a used Nerf Mega blaster yesterday, good condition, but only got one single foam dart for it. And it was so chewed up, when I tried to fire it today it ripped the tip clean off and spat the thing out in two pieces.