@screennamescree Yeah ik but maybe Backup feature is not supported when mixing Deco Units.

@David-TP Yeah most of the time Deco App shows satellite deco offline and my Ground Floor Bedroom is Ethernet Backhaul connected and even i faced this issue on AP Mode also. 😭😭

@Evian98 What's your Deco E4 hardware version and firmware version?

@screennamescree I think your backup is failed because of mixing new + old deco units in your network.

@Bert1986 What's your AC model? Both are same model? Have u tried after disable Mesh Technology from Deco App on your AC's ? You can create IoT Network for your IoT devices and then connect your AC's...

@PHenry You have to download firmware 1.1.6 from the link and install it directly from the Web UI by login your Deco account just go to 192.168.68.1