Router periodically locks up - RT-AC68P

[mjonis]

About every 2-3 months, my RT-AC68P seems to lock up
I cannot login to the web GUI (on the private LAN) and all internet traffic ceases to function (in or out)
Can still connect to the wifi, but obviously can't get out to the internet.

Power cycling the router and all is well until about 2-3 months later.
I'm on the latest firmware: 3.0.0.4.384_21045

Anyone have any idea what logs I can enable or look at to see what's going on?

Verizon FIOS home Residential service, BTW.

 

[L&LD]

Your router is not even close to the latest available firmware.

 

[mjonis]

Your router is not even close to the latest available firmware.

Thanks.
Stupid me always thought the alert thingy in the web UI that said "new firmware update available" would auto-check.
Seems I was wrong and it's 100% manual all the way.