Today I try to upgrade the r4i gold 3ds to work with dsi 1.4.2 I am using the NDS Lite following the tutorial attached in the file to perform the update. After several tries, it keeps telling me "Card check Fail", I am not sure what's wrong with it. I even thought that chances are my card is fake ? Then I remind the ak2i can be upgrade via the "dsi.nds" file, why not try the "V142_Patch_NDSi.nds" file ? To my surprise, it really works. It's just my own experience to upgrade the r4i gold 3ds with NDS Lite, In case someone don't know how to do, so I share it here.