@CheGuedara Odd... Did you select the correct firmware for your version of the devices? In my system the upgrade UI looks like this.

@CheGuedara You can get the firmware from here https://www.tp-link.com/us/support/download/deco-xe75/v1/#Firmware. In my case, I reverted to version Deco XE75(EU)_V1_1.2.2 Build 20230509. Unzip the...

@GedB, @David-TP I have reverted the firmware upgrade, and the issues have disappeared. There is some issue in the latest firmware upgrade that causes poor connection between the nodes. When the next...

@GedB Since the latest update on my Deco XE75 Mesh to version 1.2.5 Build 20230530 Rel. 46610 yesterday morning, the stability of the connection between the nodes has been very poor. Is this a known...