@David-TP Thank you for the response!

The modem is custom configured by me, the service provider is AT&T 4g, through the Netgear MR1100 2A1NAS (supports band 14). IP Passthrough enabled, and DHCP disabled. 

Everything was good until the firmware upgrade, right after that, all went to red. 

The IPV4 address was exactly the same at the PC as it was in the Deco, and I did give cloning a shot, twice just to be sure. 

I ended up returning the first set, and picked up another set of the x55's which have the May firmware and it works perfectly again, however now I'm stuck with no ability to upgrade without fear that I will lose internet again. Just to note, the new deco's are under my second account if you'd like to look at the setup, I message you my other email address. 

I'm not the best when it comes to IP addressing and subnetting, but can get by. Everything looked correct to me, which leads me to think I'm missing something, or there is some type of bug. 

How do you suggest to move forward? I'd be happy to upgrade and troubleshoot, but I have no way to downgrade....even tried a few other crafty ways with the bin files and hex editors to downgrade :)  Can my webui be edited to allow downgrade? 

Thank you for your time!

Evan

  @David-TP 

Any other ideas? Is this the type of thing that I should spin up a support call when I go to upgrade? The issue being that with no internet connectivity, not sure how TP would get access to my system to troubleshoot. 

Thank you!