You can send it back if there is no device connected to the router, but the issue still happen. If the issue won't happen if no device connects to the router, I suppose it is a compatibility issue...

How do you tell the router lost the ISP settings? Check the virgin media hub with your PC when the router lose internet. It the hub is ok, the problem is on the router. You may try to reset the...

leekb wrote Thanks for the information. But firmware 1.1.1 is not available in my region. Maybe a huge load or too many devices cause the router freeze then reboot. Reduce the number of clients to...

Hi Bernie, It is not recommended to replace only one of the three antennas, because the three antennas work cooperatively. You can buy a wifi repeater to extend the range.

Normally how many devices were connected to the router? When the router freeze , was there some device downloading or streaming? You may try this beta firmware,...

You can try to disable Smart Connect and do a test. Connect some to 5Ghz and some to 2.4Ghz separately. Smart Connect is not working very well sometimes. Do not download or stream when testing.