Hello,

I have the above mentioned router for about 3,5 years, worked quite fine, use it as AP only. From time to time, 2,4 wifi went out (ethernet worked). It happened maybe once a month, maybe even less, no big deal.

However recently it got worse, whole main SSID goes down (both 2,4 and 5), as well as management. Router is non responsive, cannot login through ethernet or the app. Ethernet and suprisingly guest network still work fine. The only option is restart, then everything is good again. however it is now happening every 2-3 days. 

I've tried factory reset, have the newest official update. Cannot change much settings since it is in AP mode. 

I thought it might be overheating, had it laying on some stuff, so I elevated the whole router on 4 "legs", is not hot at alll now, has good ventilation, and it did it again.

Any idea what else I could try or is it just going out and needs to be replaced?

Thank you all for reading and possible advice.