@Ramaa No one Deco is like just a simple WiFi router.

@Ramaa Simply u just need one more Deco mesh unit for seamless connectivity at home. Up stairs and Down stairs both.

@Ramaa You have to use one more mesh unit to create seamless mesh connectivity in your house.

@German_Soler Have u tried to use Connection Preference to connect your Deco to Deco for better singals and performance. Like from Deco 1 to Deco 2 and from Deco 2 to Deco 3 and from Deco 3 to Deco 4...

@eth2 You can use your X55 as Main Deco Unit and if you change the channels on X55 so your Deco X50 unit will automatically change and pickup the channel from Deco X55

@BarryBatsapple Have u tried to downgrade the firmware? Hope this will solve your problem.