Netgear Nighthawk MR100 Messages "ERROR_CONNECTION_TIME_OUT"

I have problem with the Netgear MR100 (unlocked) lately it stop the the Internet connection and Ihave to restart it again, this happens 4 or 5 times in the day. I factory reset it but it continues to stop the internet. I call a computer technitian and says that is probably the Netgear MR100. The Firmware is NTG9X50C_12.05.05.14, Everytime that I try to update it says that is updated. 

I called Netgear and they say that they will call me back but never did. Also, I try another MR100 that I have and keep saying the same, however it does work properly in my other location or place.

Need help please