Like an idiot I've been leaving my Wii U on connected to the internet and it's updated to 5.5. I'm considering getting a new Wii U running the old firmware. Is there a way to determine the firmware on a Wii U from the box, such as a website that could tell me based on the model number? Are there likely to be any Wii U consoles for sale still running the old firmware? Thanks for any help!