@Shai_ The article you posted is only for the UK verson of the XE75 it's not out for the US versions at this time

@rpratali0224 As long as you went Modem > deco > switch you have it hooked up correclty I have the same model of deco you have just a different network switch...

@HSBoston You would have to do VZ ONT via MoCA --> (with ethernet cord) Deco Unite (Main) (located on another floor) --> Decon Unit (Satellites) The main deco always has to be connected to the modem...

@Clent724 I would try Deco P9(US)_V2_1.1.3_201228 which is the version before the one you have been trying

@rpratali0224 Let's start with something basic please ensure that your network is configured according to either the first or second examples in this image:...

@Clent724 Also make sure your getting your firmware from the link below https://www.tp-link.com/us/support/download/deco-p9/v2/#Firmware