Try
http://192.168.1.1/Advanced_WAN_Content.asp
You are correct. If you can get to any of the menus past the wizard it will let you change the language. Then you need to go to administration I think and there will be 2 radio buttons to select between router and access point mode. On mine, neither were selected since I had not completed the wizard. After you choose router mode from there, it will get you back to like a 3 step wizard and get it working.
Thanks for this link. There's a way to get out of the Setup Wizard. As you connect to the router and get the Setup Wizard, click on the AP Mode button, then get to the page where you are requested to enter the LAN IP information or to receive the LAN IP automatically, and instead of entering the LAN IP information, click on the Home button in the upper right corner. Then you will get a message prompting you to configure wireless settings before proceeding. At this point, you HAVE to configure wireless settings, so you can just put anything as the PSK password for the 2.4 GHz band and apply. You will be taken to another page, which is completely broken - it displays only partially (not from the very top), and nothing works on that page. The good news is that this page is not part of the Setup Wizard; therefore, at this point, you have exited the Setup Wizard and have entered the regular configuration mode. It is at this point that I will try to paste the the URL for the page where the GUI language can be changed from English to another language. My hope is that by doing so, I can change the GUI language to another one and then proceed with setting up RT-N66U as a router or an access point based on individual requirements. I will be happy with the Chinese GUI at this point (which I speak none of) because even the Chinese GUI will be more helpful than the English one.
I'm working late tonight, so I will have to try this tomorrow night to see if this will work.
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