Mr Khan on 01 October 2009
Apparently it's an issue with the boot loader, apparently one of the more essential and foundational files on the Wii. They updated it to circumvent stuff like BootMii, but since the update is regarding something so essential, if the update is interfered with at all, or fails for some reason or other partway through, bam, brick.
Monster Hunter: pissing me off since 2010.
