Okay I just recently bought a R4 3ds and i'm trying to run it on my DSi but it doesn't work I downloaded the latest firmware here http://www.r4i-sdhc.com/downloade.asp v.1.65b I extracted everything and copied all the files into the root folder of my SDHC card but the DSi still doesn't run it. The ver. of my DSi is 1.4.4u and the Icon of my R4 is prince caspian I do not have a DS lite or anything so is there anyone that can help me with this problem?