Why is a flash drive in a Wii softmod not good?

[GBAtemp]

Hi, had my Wii for years, softmod, always worked wonderful. But out of the blue, I can't play Worms Battle Island, it just freeze either at boot with IOS222 screen or either when the game load after the intro animation.

Turns out, my friend's Wii does the exact same thing too. We have played for years without issue, haven't touched anything, no internet connection on it.

I was able to find the problem, we are using a USB key and if I format it and put back the game on it with WBFS Manager...

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Source: https://gbatemp.net/threads/why-is-a-fl ... od.594272/