What happens when you try to start the game?
If you get a "Preparing Update -> Connection Error -> Main Menu", try installing the earlier updates in sequence.
See my posts in the WUP Installer thread starting here:
http://gbatemp.net/goto/post?id=6211443#post-6211443
Yes, I installed 4x SSBU updates while figuring this out.
(Not only you, but you're included
One of the most frustrating parts of being a new parent is when your newborn cries, but you can't figure out what their problem is because they can't tell you.
When you complain about a problem but do not provide a full description, you are being a baby.
Actually, worse than being a baby - you have the ability to tell us what the problem is but choose not to.