Hello,
I have two Ultimaker 3 machines where I work. As usual, and for some unknown reason, one machine updates via the network automatically and did so just fine. The other I always have to do a USB update. The problem is, the file linked on the Firmware page returns a 404 error stating it doesn't exist.
If links are allowed, here is the page I am referring to:
https://support.ultimaker.com/hc/en-us/articles/360011587199