2. BACK UP YOUR NAND (OPTIONAL)
Making a NAND backup with Bootmii is highly recommended, it will recover your Wii from 99.9% of bricks.
Use the same SD card you used to install Bootmii and make sure there is at least 530mb free on it.
Bootmii is very fussy about what SD cards it uses, so avoid generic ones and try and use a Sandisk or similar.
a) Put the SD card into the Wii, if you installed Bootmii as boot2 then it will load, if it is installed as an IOS go to the Homebrew Channel, press 'home' on your wiimote and select 'Launch Bootmii'.
b) Use the power/reset/eject buttons to navigate the Bootmii menu and select the icon with the gears on it. If those buttons don't work then you will have to use a Gamecube controller.
c) Now select the icon with a green arrow pointing from the chip to the SD card and follow the on screen instructions.
D) In about 10 mins you will have a NAND backup, it is normal to have up to 80 bad blocks so don't worry if you get some
e) Put the SD card into PC and copy the NAND backup somewhere safe, you can now delete it from your card. If you installed Bootmii as boot2 then also copy the Bootmii folder to your PC and either delete or rename it, otherwise it will load every time you switch your Wii on.
If ever you get bricked then copy the bootmii folder and NAND backup onto your card, do steps a) & b) again, using Preloader to get to HBC if necessary, then select the icon with the arrow going from the SD card to the chip. It is not recommended to restore your NAND if you