@speedyb Can you tell me are you using Deco in Router Mode or AP Mode? Are you using any ethernet connected device from Main Deco? Because when i use in Router Mode and when i connect the device on...

@Bugs22 You can manually install the previous firmware by using Web UI.

@Bugs22 How did u get the 1.8.2 firmware? And yeah there is a VPN in Router Mode. I got the firmware 1.8.2 from the senior engineer of TP-LINK through email and there are lots of bugs.

@Bugs22 Beta firmware 1.8.2 is buggy and glitchy because of they added VPN in this firmware.

@speedyb But why other Two are on different firmware?

@speedyb Your other Two Deco M4 nodes are V1 hardware not V2 that's why the beta firmware is not installing on other two nodes.