I do have a US wii with 4.2U system and a wiikey 2 modchip.
I've also hacked it with the tutorial on this forum so I could install everything I want.
I have dopped every IOS on my system with DOP-IOS too, so everything is unblocked I guess.
I have homebrew channel, wad manager, a lot of emulators, so everything is working, well.. almost everything.

My question is:

Some games I download on the internet does not work on my wii, even using the gecko OS.

But when I use the neogamma r8 b15 trought the homebrew channel or the backup launcher 0.3 thouse games work!!

Can somebody please explain to me why is this happening ? Why they don't work right away ?

Thanks for anyone that got time to read and answer this thread!