Hi,
I have Extreme access point AP7502, I have upgraded the firmware of AP to 5.9.1.0-029R. After upgrading firmware when I try to login AP through GUI showing error 404 not found.
What I mean is that you've a search function on this forum webpage for knowledge base articles and other available information.
It's in the upper right corner of this/the TheHub portal
If you search for "wing error 404" the first article in the results gives you the answer to the issue = you've installed the LEAN image instead of the full image.