In my case I am already at 3.4 and am trying to decide if I need to downgrade.
Is there some chance that when my Wii automatically upgrades to 3.5 that it would render my DK unusable? Cause that would be a pretty good reason.
It seems that most of the support for these mod chips comes from user trial and error.
Maybe I should just turn on the update blocker supplied with DK for now until I think I need some type of upgrade to play a new game?