Don't use it to update the firmware, it will brick the computer
I allowed this software to update the firmware on my Smart Air computer when it prompted me to do so. The firmware download failed at 12% and left the computer in an unusable bootloader state. I've tried to reinstall the fimrware a dozen or so times, but the download always fails at varying percentages of completeness. It's pretty shocking that Mares would release software that renders its dive computers unusable if you make the mistake of trying to use it.