as this is a brick, don't you think the bricked section would've been better?
and just to make sure, when you turn on the wii, does the drive light flash twice quickly? or once?
if you hold reset and turn on the wii, can you get into priiloader?
you tried the savemiifrii?
if none of those work, check your serial number on the boot2 compatible serial list.
Boot2 compatible Wii serial number list