3 days ago I bought a Nintendo DSi with R4 and 2Gb SD card. I added som games to the SD card and it worked fine. Afer I tried to add more games, the SD card was full so I didn't add more games and put back the SD card back in the DSi. Then it came the problem that it keeps loading forever. I noticed that the kernel files are not there anymore on the SD card. The R4 is totally black with nothing written on it so I cannot identify what card it is for downloading kernel files. Any help?