Hi. I just got a R4i SDHC & RTS today. I downloaded the kernel and extracted it into the 4GB Micro SDHC card but when I load it into my NDSi XL and then I got an error but when I load it into my NDSL, it worked perfectly. Can someone help me w/ this dilemma? I spent the whole of tonight to find answers. The kernel ver is 2.7e. The box pic is at http://www.r4rts.com/product-en.htm had an additional V1.4. My NDSi firmware is 1.4.1u. Is it the one behind it cuz I heard that it block flashcarts. Pls help me. I'm going to get crazy if I don't solve this.