Hi,
I had exactly the same problem as you and it almost drived me mad. I have exactly the same router as you and firmware. After a lot of trial and error, I finally solved it. You need to make the TR-069 client completely disabled.

You find the setting under "Management".
Enter something random on "ACS Url", so it´s not empty.
Uncheck "Connection Request Authentication".
Change "WAN Interface used by TR-069 client" to LAN.
Click "Save/Apply"

Another good thing is to make sure IGMP is disabled on the WAN-interface. You probably only need it if you want to use the router with a IP-TV box.

Maybe some of the mentioned steps are unnecessary, but they doesn't do any harm. My router has been up for a week since I did these changes.

I wish someone could explain why the router is shipped with default settings that can cause all these problems. I searched all around the internet and never found anything. It's a bit sad that I had to figure this out all by my own.

I hope this can be of any help to anyone having the same problems!

Cheers,
Patrik

There was such a problem in my Devyroom office, the firmware did not help. We did not have time to understand, so we just bought new routers. And these lie like pieces of iron. I would be grateful for the decision.

Hi,
I found one more thing that may confirm my suspicions. In the latest firmware for hardware version 8 one of the bugfixes are:
" 1.Fixed a Bug in tr069 which will cause the router to reboot."

Well! I think we have the same problem with V7.Maybe there will be a new firmware for V7 sooner or later. In the mean time the workaround in my previous post should solve the problem.

My router have a uptime of 13 days now! :-)

Regards
Patrik

Thanks Patrik,

Disabling TR-069 using your instructions is working. The router has been up for over 24 hours - which is a record for here :-)

I did not disable IGMP as I really wanted to understand the minimum change required to stabilise the system.

Thanks again,

Simon

Hi Simon,
Is everything working okay? My router have had a uptime of 31 days.

Patrik

Patrik,

My router has been up for over 19 days which means it hasn't rebooting since I made your suggested TR-069 change.

:-)

Simon,
That was good to hear and that I could help someone. Good luck! This router is now the most stable router I ever owned and the speeds is better than with my previous Netgear.