when every time I reboot my archer c20 router from its web based GUI / configuration page it always select channel 2 in 2.4ghz mode and I never looked at its 5ghz band to see if its also select some same 5ghz channel alltime. But when I manually reboot my router from my router power outlet it always select different channels in 2.4ghz mode. so whats the difference between reboot from web GUI and manually reboot.

Generally I live in a too much 2.4ghz band conjested environment. always 14 to 15  2.4ghz router signals are shown in my pcs wifi section. so I have to always manually reboot my router to avoid channel overlap. I think its a firmware issue. Why is it happening ? If it was firmware based issue then I wish TPLink authority will disclose a firmware update as soon as possible.