I see from https://source.sierrawireless.com/resources/airprime/software/airprime-em73xx_mc73xx-fw-package-latest-release/ that the latest firmware release for the MC7304 is SWI9X15C_05.05.58.00. Our cell modems, which are a few years old now, contain firmware release SWI9X15C_06.03.32.02, which appears to be a larger number, and so I would assume a newer release?
Am I mis-reading the “06.03.32.02” part? Does that actually mean something else?
I’ve not been able to find a page of previous firmware releases to compare against.