I am having the same issue, I tried the update the firmware from 4.5.0 to 4.5.16 via the web admin, but the UI got stuck on “Downloading Firmware” and never changed, the router was still working. I closed the window and went to sleep. The next day the admin was still on that screen so I rebooted the router. It was still on that screen. I tried to update via uBoot, and the firmware update said successful in the browser, but it never rebooted. Now every time I try to update via uBoot, the update fails. Please help!