@Raziel78 

there are multiple topics about this on this forum. It's very frustrating. If you have the receipt then return the V2.

@Robert_M New firmware for v2 has just been released as you probably know, making it equal to v1. No need to return v2 units, I have 3.

@Robert_M  yeah, I noticed them after posting. Thanks for the advice.

@cacb  link or it never happened!

@Raziel78 

Apparently an update was released this morning and it was on the support website and it just got pulled. I would definitely return your units rn and wait till this product gets updated properly. You can put this money towards the newer X series to expand your mesh.

@MapleLeaf 

Am I ok mixing the M9 Plus v1 with the new x mesh in the same network?

@MapleLeaf 

Deco M9 Plus is unique in being a tri-band verusus the other newer dual band ones.

@Raziel78 It is mentioned here https://community.tp-link.com/en/home/forum/topic/212300?page=1

With link to https://static.tp-link.com/2020/202006/20200623/Deco_M9Plus_V2_1.4.0.zip

@Raziel78 

It is unique with a third 5ghz band being a backhaul band. However, it depends on your internet connection.

E.g. If you have 1gbps connenction then you will see 1000 Mbps wired,  theoretically you can get 800 Mbps on 5ghz and realistically being 1 foot away you'll see 500-600 Mbps in the best conditions (with a wire running as your backhaul). This means that unless you have an internet connection above 500 Mbps it won't make a differnce having that third band as most people have a stable 200-300 Mbps internet connection and that can easily run on the Dual band models.

That being said I don't know your home setup and what internet speed you have, along with the distance between pods (very important) as a big distance will render that third band useless. The realistic numbers are the ones that matter, they try to sell you on these high numbers but most of it is marketing.  So getting an X series with dual band with better support and future updates won't harm you as you want to stay in the deco ecosystem or get a P series that will use powerline. 

@MapleLeaf 

Thanks for the clarification, and to answer your questions; the house is two stories 2,500 sq ft and the internet connection is 1 Gbps. I have only two devices that support AX band.

Let's imagine both v1 and v2 firwares of Deco M9 are available and updated. Do you happen to know the hardware difference between both? Any reason to beleive the hardware in v2 is worse than the v1, especially how TP-Link tries to neglict its support?