The software update comprises of security enhancements, bug fixes, and compatibility upgrades in one package.
More specifically, this update includes fixes for a range of issues. First off, it provides general fixes, including bug and performance improvements. Secondly, it delivers compatibility updates, ensuring that your AirPort devices will play nice with other hardware and software you use. Finally, it offers security improvements, helping you to feel more confident in your online activities.
It's worth noting that this update is specifically designed for the AirPort Extreme Base Station with 802.11n*. However, if you rely on any of the other devices listed above, you'll still want to check out this software upgrade. Overall, with its many helpful fixes and enhancements, it's definitely worth considering if you're seeking to improve your AirPort device's performance and security.
Version 7.4.2: N/A