To make this really short and simple, way back when I first modded my Wii, some of the stuff I installed needed me to install custom IOS. Yeah, I know we aren't supposed to talk about such things, but hear me out - I want to get rid of this stuff.
The only thing I specifically remember installing was an early USB loader (No, I wasn't a pirate. No, I don't expect you to believe me). I think a couple other things wanted custom IOS, but I don't remember what the software was, nor what IOS I had to install for any of it. I deleted the apps themselves quite awhile ago, but I'm pretty sure the modified/custom IOS are all still there, and I'm worried about compatibility with legal homebrew and the effects that these files might have in the long run. Is there any way to restore my Wii to a clean, legal-homebrew-only state?