So I read the other threadhttps://forum.gl-inet.com/t/gl-mt2500-upgrade-from-4-6-8-to-4-7-0-fails/51912/29 about some browser issues with varying incompatible opinions on which browsers do and don't work.
Using MacOS. Firefox failed. Safari failed. Was going to try Chrome. Then I pressed the back button on Safari not in the latest open window and the browser says "Update in progress".....