@David-TP as I said in my post, the "download firmware" page only shows v1.1.0, with no mention of v1.2.0. Maybe because I'm not in the region you expect me to be in, but surely if my devices are receiving the firmware, it would also be available on the download page?

  @David-TP Thanks, that has worked. I checked the labels on both sets of devices, and they're both labeled (US). There's not a hardware v1.2 listed under the US firmware, but there is under the EU firmware. This build exactly matched the one installed on my set already running 1.2.0, so I installed that on my second set running 1.1.0 and it has upgraded successfully. The whole "different firmware per region" thing is really confusing in a place that often gets sent stock from various parts of the world, so we have no idea whether it came from AU, EU, US, or somewhere else, and it's often mixed and matched. Why not just have one firmware that asks or determines the correct region and adjust its settings as appropriate?