I recently received an R4i SDHC Dual Core that works with my DS Lite but does not work with my DSi XL. I borrowed the exact same card from my co-worker and it works flawlessly on my DSi. I've copied the same files that he has and even used his SD card in mine but all I get is a white screen on mine. I have also tried formatting the sd card several times but it does not work. I've been trying to see if I could get a kernel update for my card but I cant find one anywhere. Anyone have any tips or advice? Any knowledge of r4isdhc.com.cn?