Their firmware updates are just straight up not working for me on my work laptop. To be fair, I've had zero gripes with how this machine has worked so far (got it about a year ago), and it's probably still the best computer I've gotten to work on. But it keeps prompting me with the same firmware update - one that supposedly disables Intel ME, a feature I definitely want disabled. But when I run the update it just prompts me a few days later to run the same update again. So I'm not at all surprised to learn that this is a proprietary system.