Somewhat belatedly, here’s a link to a newsletter from SPORTident, specifically targeting event organizers and SPORTident equipment maintainers:
http://newsletter.sportident.com/m/6325933/583652-7931b88e69b728e062104a5dd7
It mentions a rare issue with some controls after upgrading to firmware 623. If you notice this, please let SPORTident or me know. I can be reached as always at mailto://erict@sportident.ca