um i really don't think that theres a way to prevent it since nintendo does what sony does on some of the games automatically putting the firmware in the disc. But overall Bannerbombv2 does work and majority of my stuff is working now my emulators and roms, and Skins and musics are working. If you run Gecko OS it works you just need the 1.9.3 version.
Here is a link of how to get it.
http://wiird.l0nk.org/forum/index.php/topic,4375.0.htmlBesides BannerbombV1 not working and Gecko 1.9.2. 1.9.2b not working with 4.2 there really isn't much. However the reason why I updated mine is (Not sure if True) but if you load NSMBW through some form of Gecko I guess the game would randomly freeze. I'm not sure if this for all forms of Gecko or if its just past versions or if its just USB Gecko. But I really don't feel like "State Saving" or whatever its called everytime I beat a stage.