Installing the homebrew channel on a japanese Wii

Hello, I recently tried to install the Homebrew channel on my japanese Wii using the bannerbomb. The systemversion is 3.2. When i entered the SD-card menu it seemed it couldnt find the card at all. So my question is, should this work on my japanese wii or do I have to buy a japanese twilight princess and installing it that way?

Is the switch on the side of the SD card switched to "off?"

Hmm cant remember that it was, tried the SD card on his european Wii and the Wii just froze. Ill have to ask him about the switch since I left it at his house.