@Nuge Your replacement node has outdated firmware. As long as it works for you, you can leave it as is, but eventually your Deco mesh will start getting behind in bug fixes and new features. Unless...

@TEM3 Just a thought: swap Main Deco with one of Satellite Deco. This is how: How to switch your main Deco to another Deco currently on your mesh network If this is because of load, your new Main...

@StaceyEllis I run my Deco mesh in Access Point mode, which gives me maximum Deco WiFi performance: no parental controls, no bandwidth throttling. I disabled 2.4GHz on Deco Main Network and all my...

@antollamh Keep the router. You can turn off WiFi on TalkTalk router, in the following router configuration page: Uncheck both "Enable Wireless 2.4 Ghz" and "Enable Wireless 5 GHz." Also, if you...

@Brubacker You may need to increase QoS value in Deco, see this document: Using QoS feature of Deco As for the hardware version number, you could find it on the sticker at the bottom of M5, it is...

@Mogbat This is correct. It is not recommended to do both Deco hardware and main router swaps simultaneously. So, swap Deco M4 to X20 while keeping old main router, see that everything works, then...