If you have that flash and close, it means wupclient could not connect to your wii u.(wrong IP/VPN blocking connexion)
As long as you don't see sys_prod.xml.bak and sys_prod.xml, it means that it didn't work.
Thank you. I had my settings wrong, wrong IP
using the program in the rar, i was able to find my wiiu ip.
worked perfect, thank you.
great tool.