Thank you very much for your detail information. Did you send us an email through support@tp-link.com? We have received a same feedback today. A new firmware was just released. Please have a try...

Can you provide more details? Update the deco APP version and deco firmware to the latest one, as well as the IOS version or Android version. Can other APP work over LTE network? Who is your LTE...

bma wrote Is it possible to downgrade the 20170725 firmware to 20170614? I was "lucky" to partially upgrade to this version firmware before it was cancelled. Now I'm stuck with 3 fw 20170614 Deco's...

The 20170725 firmware has been cancelled this week. We will launch another firmware in the middle of this month.