were you using the same exploit each time?
thanks for your reply when i used modmii i downloaded the files to the system eg: 4.2e 4.3e for each wii console , although 1 wii is 4.1 the files for 4.2 workeded fine even the files for 4.2 worked , but when i downloaded the files for 4.3e and put them on the same sd card i got the error that i posted , after i managed to get homebrew on when it was time to install bootmii it would not install bootmii as bootmii 2, so at the moment although 4.3 is chipped anyway i have formatted and updated the console and all backups work fine ,
this is what it says on insturctions eg: An SD card formatted to FAT32 required (best results are with SD cards, SDHC cards will only work on System Menu's 4.0 or above.... so i dont understand why 1 card will work and yet another card will not unless it is a faulty card as all cards have been formatted to fat thanks