Wii U Transfer Tool

The Wii U Transfer Channel provides ability to copy your Wii content (including save data, purchased content from Wii Shop and all WiiWare and Virtual Console downloaded titles) to a Wii U system through the use of a SD card.

Requires NAND dump
This channel boots and loads fine, however, without a NAND dump from a real Wii all you'll get when trying to connect to the internet is an error 204701.