hello all and thanks off top. following xzerox's guide, i installed everything without a problem... Or so it seemed until i tried to play a backup that doesnt recognize in the disc channel and i get the (dvd 574 error) when trying to play through backup launcher..any ideas why. when viewing the error list index, it reads that the error is either an out of date IOS or a bad iso..which it plays on 3 other wii's and they've all been done using the same guide. (so how could it be an outdated IOS) except the fact that this was a virgin 4.1u and the rest were 3.3 and up. Hmmm..