@ryg Yeah i'm using that firmware which is working fine for me on my all (5) Deco M4 units. I think you have to factory reset all the Deco units from Deco App and then do setup again only Deco M4...

Hey TP-LINK !! Why QoS not working properly on my Deco X20 when i set the speed in QoS and priotize the device but still im not getting same speed on Ookla Speedtest. I want to improve my internet...

@ryg Sure

@ryg You can install the beta firmware on Deco M4 by using the Web UI by entering their ip address one by one like 192.168.68.XX and don't type 192.168.68.1 this one is for Main Deco you can check...

@ryg Try to install by using your phone

@ryg What's your current firmware installed on Deco M4