Set up the load balance function to have a try.

Connecting it to the AC outlet is a good idea. You should have a try to see whether the problem is caused by the UPS or not. And you may reduce the clients connecting to the router. Good luck!

ebrahimzade_vd wrote [COLOR=#000000] I am living in a dormitory. there is also other routers here, could it because of conflicts with the other routers? It properly causes by wireless interference....

It will get my nerve if I have to reboot my modem several times a day. Do you any special application or software running like Belarc Advisor? How many devices do you have?

Have you run the utility on the windows computer? try to uninstall and re-install it.

Yeah, IPv6 is a popular Internet Protocol now. A new firmware is needed to support this.