Wii Modification Woes

MadWorld came in today, but I can't play it because it requires what lots of newly released games require, an update. Having had modified my Wii's firmware, I understand that upgrading the Wii's firmware can cause irreversible damage to it. I'm also aware that it could do nothing, but I'm taking any risks. I'll just have to wait patiently with the other WiiBrew chumps until the new firmware (3.5) has been fully tested and stamped with WiiBrew's seal of approval. Until then, GAH! :(