OK wiikey mod chip users... Here is the FIX (no gecko loader is necessary) (Thank you Soulwarrior)
You must install three wad files to update the system. The files are:
IOS38-64-v3609.wad
IOS53-64-v4113.wad
and IOS55-64-v4633.wad
Use the Homebrew channel to install them...
1. So install the homebrew channel (if you haven't already)using this guide
hxxp://www.iol.ie/~taz/WiiHowTo.txt
to get the HBC files go here
http://gbatemp.net/index.php?showtopic=108959
scroll down until you see v01 Beta backup loader section, under that section you'll see wii iso loader.zip
NOTE: before you put the files onto the memory card to start installing the homebrew channel do step 2
2. in the files you have to put on the sd card there is a folder called "WAD"
3. put the three "wads" you extract from Kororinpa/or Madworld into this folder on the sd card
4. put the files/folders (apps, ID1, private, spectrum games, wad, boot.elf, and mplayerwii.config) onto the sd card
5. follow the guide and install the hbc
6. go to the homebrew channel you installed (do this with the card plugged in)
and go over to wad manager
7. once wad manager loads press + each of the three wads to install theme.
8. once you install the 3 wads the game should work.
To get the 3 necessary wad files...
1. load the Kororinpa (or Mad World)iso into wii scrubber 1.3.1 (key.bin must be present in the root dir)
2. go to partition 1 -> sys
3. extract IOS38-64-v3609.wad IOS53-64-v4113.wad and IOS55-64-v4633.wad
4. install the 3 wad files using wad manager via HBC
YOU MUST GET THE WADS BEFORE YOU BRICKBLOCK