@Cedric1 The latest firmware is 1.5.6, not 1.5.9

@capt.Yannis In the app/ web UI, does the 2nd Deco show up as connected to the main Deco? Do other devices connect to it?

@David-TP more than 2 months gone, but no solution...

@GrimReaper It's an A53 issue, search before you post: New Samsung A53 can't connect stable to Wifi on Deco X60, connection keeps dropping Samsung Galaxy A53 can't connect to mesh wifi (TP-Link Deco...

@MinhKunn The 1.6.0 firmware hasn't been released for Deco M4 yet

@LukePL Written on the packaging Written on the bottom of the router ("Ver.: x.x") Mentioned in the firmware update page of the web UI