@SrDarkWarrior After 2days i think now is working fine and no more disconection issues in the Last 24 hours.

@SrDarkWarrior You can find it at tp-link support webpage: https://static.tp-link.com/2021/202101/20210129/Deco_M9Plus_V2_1.5.0_201211.zip

Yesterday I have upgrade my Deco m9 plus system (4 decos) from firmware 1.4.3 to the la test 1.5.0 After that, time to time, all slave decos disconected from Master deco and its Led start flashing in...

@TP-Link_Deco Sorry, it was my fault. I have just answered 3er July email.

TP-Link_Deco wrote @eforosj This case will be forwarded to the engineer and they will help follow it up to locate the issue. Our engineer will email you, if you are willing to do further analysis,...

@TP-Link_Deco I think trere is a problem in that deco (not in the others two). Mybe it is fabric defect. I have reset this deco, disconect the other two and installing only the problematic deco in...