i am at the point where you launch bootmii. it launched successfully and when i attempted to transfer the nand.bin and keys.bin from my sd card to windows xp desktop it gave me an error saying file was not readable or something and the sd card was formatted to default fat16 so i changed the format thinking that was my problem to fat32 and the same thing happened but this time the error said the nand.bin file was corrupted and it let my drag the keys.bin to desktop with no problems.i bought wii feb 2011 4.3 already installed. any help would be greatly appreciated because i havent touched my wii in 3 days because im afraid of bricking it with corrupted files saved. also i surfed the web for other ppl having same problem for a total of about 20 hours and only found one forum and noone had answered