I have a mesh network setup with two of the above devices, and EX820v Router and also a HX710 with different firmware - 0.2.0 3.0.0 v6082.0 Build 240806 Rel.7178n

I have BRSK broadband but the 3 HX710Pro were bought from ebay and two of them have the BRSK branding on them, and the Build 240806 Rel.7178n does not.

They are not always functioning correctly as a mesh network. My phone sometimes fails to remain connected to wifi when I go from downstairs to upstairs or vice versa and I'm wondering if this is because of the different firmware versions.

If so, is it possible to change the firmware on  the device with firmware "Build 240806 Rel.7178n" so that it matches the others?

Many thanks,

Damian