If I'm not mistaken I believe MX v ATV Alive was one of the rare games which never worked on 3.41! The fix would allow title to boot and the game would be playable for the first race then would freeze when attempting to get back to the main menu. I'm almost certain this was an odd unfixable problem. it worked fine on 3.55 tho.
Unless the updates fix anything or (and obviously please prove me wrong here) another fix was made then 3.41 users could not play this succesfully.
I agree with wwywong 100%. When 3.55 CFW first came out I had 3.41. I updated it once to Kmeaw and enjoying it everytime like hell. Everyone on 3.41 can update to 3.55 CFW. I can say you all will enjoy more.