In the past I've added secondary controllers (Aeotec USB stick and HomeSeer USB stick) in order to update firmware on some devices, etc, and everything went super easily.
I recently dug out a Ring hub (leftover from buying a couple of their "starter" packages on Black Friday) in the hopes that I could use it to upgrade the firmware on Ring contact and motion sensors (and maybe other Ring-branded items). I realize this is not the most important use case in the world, but I was curious.
The Ring base station clearly says that it supports its own addition as a secondary controller in its manual (which I'm honestly pretty surprised about!). However, whenever I try to include it to Hubitat, it errors out after 30 seconds of trying. I've reset the Ring station, rebooted Hubitat, and moved them to be right next to each other, and no love. I'm curious if anyone (particularly @bcopeland since I know he is a Ring sensor aficionado) has had success in doing this? I realize it's a ridiculous use case, but hoping someone may have been successful.
Additionally (Bryan or anyone else who is qualified to poke at it), I have a second base station (from those same Black Friday deals) I'd be willing to send to you if you do want to poke at it.