@ksuuk The link which you gave is Beta? I am not able to upgrade. It gives error.

@ksuuk you mean even after downgrade still your router crashes and restarts? I have disabled 5Ghz. i have no issue now of restarting.

@Kevin_Z 1. Please check how is the C80 connected to your network? Are there any other range extenders or switch in the network? If yes, try to remove it first and confirm again. No Range extenders...

@ksuuk , I am using latest 1.5.3 only. I tried manually updating with older firmware, it was not happening. You are also still facing issue of restart, right?

@Kevin_Z Everything is original. It was working properly till last software update. Its open and shut case of firmware issue. Disabling 5Ghz, I am not seeing any restarts. Can you guide me if it is...

@ksuuk I tried NAT boost disabling. Still restarting.