It's a 10 years old switch series (it dates back to 2009...or before)...so don't expect much more further software updates in the next future.
The web management dashboard should support various web browsers (as per Release Notes): what web browser have you tried with? have you tried, as example, with Mozilla Firefox 52 ESR - it's not the latest available - available here which is the latest Firefox ESR version supporting Java (see here for reference)?