Animal Crossing City Folk Problem

Hi everyone, I've downloaded Animal Crossing City Folk and when I put the disc a message pops up that reads "The disc could not be read", the same happened with some other games because the disc was dirty, but it would happen when playing, when I put this game the message appears automatically, even without going into the Disc Channel. The .iso I got was NTSC, with the update removed. I've read that I have to install IOS38 before playing, did so using DOP-IOS, downloaded and installed OK, but still can't boot. Do I need a Wii Speak for this? Or do I have to install the Wii Speak Channel, or another IOS?
Edit: Re-burnt the game and it works (at least I get the title screen, didn't try playing it), but the game auto-boots? It's the first time I've seen that.
Edit 2: Found in google a program called Wii Autoboot Creator, used it to revert the game to manual boot and now it works perfectly.