You’re correct that the latest version of firmware is dated late 2016. I haven’t been updating the firmware because the remaining bugs are almost entirely having to do with iOS and (especially) Android, so I’ve been trying to take care of them on the app side.
By far the most problematic firmware bug is in the bootloader itself, which I unfortunately cannot update remotely. The issue I’m referring to is that if the batteries are too low, the meter will fail to update and get stuck in an update loop. I’m trying to address that on new stock but unfortunately since that’s bootloader code I can’t change it on existing units.
Thanks for pointing out the captcha issue – they should all be the google style “I am not a robot” style captchas now, but I see one of the old ones. Will try to figure out why that’s being served.