Only certain revisions needed the cut.So, funny thing happened yesterday. I updated my R4i card from www.r4ids.cn (which has a C in the connector, so I suppose to be a revC) and was about to get my X-acto ready for surgery, when I tried loading it to my updated 3ds Xl and it actually worked. No cutting seems needed. I've tried a couple of games, and they all run fine so far... What does this mean? I have no idea.