I am trying to letter bomb my wii with no success. I am on my third SD card. I am running 4.3U. I have tried an 8 gb SDHC card, a 4 gb SDHC card and a 2gb SD card. None of them have worked. I formatted my cards multiple times between FAT and FAT32. I put in the correct MAC address into letterbomb. I looked at the previous day and tomorrow for the letter. The private folder is in the root of the SD card. I am connected to the internet. Is it a hardware problem? When I insert the SD card into the wii and go to the SD card menu it tells me that "The device inserted in the SD Card Slot cannot be used." Is my sd card reader in the wii broken?