Choosing a thermal camera

Went with a Uni-T because of the ability to use a macro lens with it. Ordered both the lens and a camera. Already got a camera and it's ok, but the software is bad. Like really bad. And there is no way to update a camera firmware. Software doesn't provide that function and there is nowhere to get firmware binary file. I've read that someone had to ask Banggood to send it. Then the process seems straightforward - just put a bin file onto a uSD card and it'll update. But for some reason you can't get the firmware virtually anywhere, which is sad - I got a standalone camera from a longevity standpoint. Otherwise I'd go with a smartphone version.