do u have HBC installed? if dont,,, u need Bannerbom v2 to load Hackmii installer else, load it from HBC. wait aroun 30sec and press 1. then install hbc + bootmii (as boot2 or ios if only option). after reboot wii, run Bootmii from HBC with IOS installation (press Home and launch BootMii). hit power 3x to select gears and hit reset. now hit reset in first option to start nand backup. verify backup after done and dont worry if any bad blocks,,, its normal.