@Rasel_Dhaka-BD The firmware from global (EN) website will work for US too

@OliverHA You're the first person ever to ask me that question 😅 1. I didn't do enough research. Had I done, I would've gone with M5 in a heartbeat. 2. We don't change routers in 8-10 years, which...

@Kuntz You need to download the firmware from tp-link website: https://www.tp-link.com/en/support/download/deco-m4/v2/ Then install it through web UI: How to upgrade the firmware of TP-Link Deco...

@Kuntz The latest firmware for M4 (V1 & V2) is 1.8.2. Update & see if the problem still persists

@Radyohead Send feedback through app store

@OliverHA Yes, it's sufficient to connect the first Deco via Ethernet to the router