How do I set up port@1 to be a WAN?

[cppcoffee]

I found reference:

How can I change my router's lan port to wan port?

Is it just the WAN port that got damaged, or the SoC itself? If the other ports are working, you can reconfigure the switch using LuCI. Take note of the settings of the WAN port in the switch-configuration section, copy them to the port you want to use, and remove all settings from the "old" WAN port.

How to enable luci Page Network > Switch?