I recently had my Wii repaired by Nintendo and I had made a nand backup of it before sending it in. Previously I had my BootMii installed as Boot2. I got my Wii back with everything erased and now I'm only able to install BootMii as an IOS. So would it be safe to install my old nand backup or is it not compatible with the changes done to my Wii? Is the nand on my Wii too different now?