Thanks @wolf_ , I was a bit afraid of this damn update, got it through UTIK Helper, installed it on USB memory (read on the forum that souldn't install it on system memory) and then played normally!
Thank you for being the kind sould that replied here ^^
My wiiu shows the message "Trying to update", but since I use fake DNS It won't allow me to do so.
But whenever it skips the update the message is "perform system update" or you will be unable to play. Then "returning to Wiiu Menu"
I am currently at 5.5.1 U and tried downloading the game and...