This isn't working for me.
I bought Brain Age on the Eshop using Nnu patcher
The game isn't downloading because of the 5.5.2 update
I turn off the Wii U and I unplug it from the mains
I wait the 10 seconds
I plug the Wii U back in to the mains and turn it on.
But the game isn't downloading...
auto
Just totally unplug the system, wait a couple of mins and update, is gone, game downloading \o/
Can you describe better what you did?
I'm in the same situation as you and I unplugged my WiiU from the mains. But the update is still stopping the game from downloading