New G18 I've had provisioned by xfinity appears to be repeatedly attempting a firmware update, it'll start with the solid amber “receiving power" light, then switch to a blinking amber “firmware update" light, then a blinking green “aquiring downstream / upstream signal” light and then a solid blue light which should be where it stays but it'll quickly return to the blinking amber stage and then repeats everything again. I've tried factory resetting it multiple times but it does not help. I've considered that maybe the upstream or downstream power levels or SNR are too high or low but they all seem within spec

I was on the phone with Xfinity support for an hour when I initially got it and they could not determine an issue on their end, after leaving it for a night it fixed itself for a couple days but has started doing it again after a power outage.