i guess... i left my wii u plugged and offline but with the always on and updated... hey, still works

alr, imma do it, thanks!

nevermind, it disappeared.

What you saw might've been the Wii U checking for system updates, but since there isn't an update folder, assuming you deleted it, it will appear as a failed system update in download management.

IT'S BACK!

i don't recommended to update it.