@MERP If u set Reboot Schedule it will be very helpful for you so your Decos will choose best channel everyday.

@MERP Try Network Optimization feature once a day or you can turn ON Reboot Schedule so your Decos will reboot everyday at same time before you wake up.

@n0zkl3r Change your Deco into AP Mode

@EnzoBarbier You can install this firmware 1.7.0 manually by using Web UI on your browser on phone or PC/Laptop and then you will able to see Connection Preference option in Deco App and then you...

@FC83 You can connect them by ethernet backhaul to get better speed on all Deco units.

@Mukhtiarm Return it to the seller because Deco M4 are always boxed packed in local market which are brand new so it's better to return it to the seller.