Running the 100J disc on a Wii turned out to be a little more of a hassle than I anticipated. The 100J disc (image) was discovered in a bank on the HDD of a RVT-H Wii unit and it was marked for deletion. The disc image contains 2 partitions, an update partition and a game partition. Both partitions are unencrypted, thus making them set to only be able to be run from a RVT-H in it’s present form.
There are other user compiled 100J disc images available and those can be converted to work on a retail Wii, but they have the ID of RABAZZ and they have a bunch more tools than the real 100J.
In order to run the 100J disc in an authentic way you must do the following steps on an RVT-H.
Install SDBoot and wipe the rest of the NAND.
Insert the BroadOn SD card, let it install and will end witht he slot light blinking.
Insert the SD#1 SD card. Hold Z on GC pad #1 to bring up the dev menu
Change the region to JAP and mode to development.
Load the bank with the 100J disc.
Will add more info shortly. Mostly just a place holder.