Thanks, it was actually the "Specified IP address" I had enable which I was able to disable via SSH.
I guess my PC's IP address changed during the update and it wasn't able to recognize it anymore since the "Enable Manual Assignment" option got reset or something.
Hello, I updated my AC68U from 39E3 to 43E6 and I can no longer access the GUI.
Neither 192.168.1.1 nor router.asus.com work, it just says ERR_EMPTY_RESPONSE.
SSH access still works fine, any fix? Thanks.