I have had this same firmware update for a couple of years. Works fine, but Wifi Ranger states:
Support for 5G cellularSoftware improvements now deliver faster internet speedsFaster overall control panel command responseMore intuitive control panel interface (clearer messaging and simplified logic)Simplified access to control panel using automatic redirectEasier control panel access from smartphones (both iOS and Android)Automated login to filtered sitesMore accurate and faster speed testsMultiple “bug fixes” and general enhancements