So, my problem is the IOS's?
I am so glad that I've solved my black screen issue. Thanks so much to hackearned's wonderful thread. But I thought that's just for my particular case for the "Wii sports resort" only. I have not got other black screen so far, although there would be the odd suspendding occurs sometime in playing some games. That might be the IOS conflicts issue, I guess
Anyway, good luck!