Hi, So the original problem is described here https://community.tp-link.com/en/home/forum/topic/270556?page=1 I have installed the proposed fix as described here https://community.tp-link.com/en/home/

Hi, i've been using a pair of M4 (r) decos flawlessly (seriously they were working amazing best internet connection in my life) Recently i've received a notification to install firmware 1.5.0 Build 20