Stay away from Bootmii IOS NAND recovery. Your Wii is not that far gone that you need to resort to this potentially nasty brick making routine. NAND recovery is a last resort thing, not something you want to be dropping back onto your Wii every other day, unless you have boot2 of course.
It's unclear to me what you've actually done. You've quoted part of a proven tutorial, that normally if you follow correctly does not cause banner bricks yet you seem to have one, which is slightly strange.
So did you deviate from the instruction? Was it after installing IOS60-patched that you got the brick? If so then you need to install it again. Load preloader, hbc and wad manager and re-install the ios60patched wad. Ensure you get this patched wad from the archive downloaded for the softmod tutorial as there may be bad wads floating about out there. Don't un-install IOS60, ever! If you do you'll have a total low-level unrecoverable brick.