Wii U updates itself. Apparently Nintendo has not forgotten its console, but releases a firmware update especially for her.
It looked like a videogame piece passed the Wii U, both from players and from mom Nintendo, but apparently, the Japanese company has released the first and last 2019 firmware update for your console.
"Further improvements have been made to overall system stability and other minor changes to improve the user experience."
If you are a fan of the Nintendo console and hoped for something substantial, don't get excited. The 5.5.4 update improves stability and brings some small adjustments to the overall quality of the console experience, but nothing more. Here you can find the patch notes complete.
If you liked the console and you are still playing, here is a practical way for you to play where you want.