thanks for the quick answer. i deleted nand.bin from the sd card manually and now its working - backing up right now :) thanks againby shadeless - BootMii Beta
i, too have a question. since it is about backup/restoring the nand, i'll post it in this thread. i hope thats not a problem. i installed bootmii into boot2 and tried the backup feature, it told me to insert a sd card which will be formatted. i did that and bootmii said something like "nand.bin will be overwritten - press reset". i then pressed the reset button and it went right back to tby shadeless - BootMii Beta