@Moral3s cool. It is not available in Deco app yet here. I have 3 decos. If I install 1.5.5 on the Main Deco, does it install automatically on all Deco Nodes? Or do I have to install the firmware om every device seperately. ?

  @JanRekenaar 

You need to connect to each box indivualy using a web browser ans thé IP of thé box

  @Pascal_DECO_94 

@JanRekenaar 

If you use http://tplinkdeco.net/ you can login and upload the forward to all deco's all at once :)

  @David-TP Hi David, I'm currently running 1.5.5 on my X50's and it works fine except for one small issue.

My main Deco never shows any network activity anymore in neither the home page, Deco units list and client list. It always shows 0 kbps up/down although connected devices do show network activity and also both other Deco's. Because of this the main network usage also keeps saying 0 kbps up/down making it completely useless on the start page.

My Deco network is setup in AP mode. In the screenshot you can see the other Deco's having network activity but the main Deco still shows 0 kbps.

I already tried rebooting and changing the Main Deco to "Gang" ("Gang" and "Living Room" are both directly connected to my modem using Ethernet) but then the new Main Deco has the same issue.

I also updated the app to the newest version that came out today but still the same issue. Any idea's/suggestions? Thanks!

  @DenniSundaY  and of you click on the main Deco, does it show the devices with correct up-download speeds? 
 

  @JanRekenaar Yes all connected devices in the Connected Client list show network activity. But I think I might've found the culprit. 

What I forgot to mention is that since 1.5.5 my Modem/router (which acts as DHCP server) strangely also shows up in the network list and it reports every network activity going in and out my Home network but in reversed directions.

So if I download something using my MacBook with 200mbps, it will show 200mbps download speed correctly on the MacBook in the client list but the Modem displays 200mps UPLOAD. This might cancel out every network activity back to 0 because every outgoing and in going network activity goes through the Modem of course. 

Edit: But I don't know how to solve it lol.

  @DenniSundaY my suggestion would be: turn of modem. Turn of all Deco. Wait 10 minutes. Start modem. Power up all decos. See it its better. 
 

this sounds like a one time off situation. 

  @JanRekenaar I did as you said and it didn't work. It doesn't seem like a one time off situation because it actually kinda makes sense. Everything you download from a device gets pulled from the modem (hence upload speed) and the Deco just doesn't seem to understand anymore from which device get's its internet connection from (either to to correct the total or don't list it as a device). Before 1.5.5 the Modem wasn't displayed in the connection list, never did (also not on my former M5's). So it seems more like a firmware issue to me.

There's one thing I am going to try now, siwtch to router mode and then switch back, it might just work (but i doubt it).

  @DenniSundaY please let me know how router mode is going. I have Deco x50 in router mode. I am on 1.4.1. Would like to update to 1.5.5 but this (what you deacribed) is a flaw I don't like. 

  @JanRekenaar When I changed to Router mode it displayed network activity correctly but I switch back as soon as possible because a double NAT isn't great and my entire IP range was changed etc. But when I switched back to AP mode, same issue again. I am certain now it's a flaw in the Deco's when in AP mode. Tried changing some settings in my Modem too but haven't found anything yet. 

So unfortunately I can't tell you how Router mode is performing other than that the network activity is working as it should.

The issue I am having is not feature breaking but still 'heel erg jammer' :)