Firmware update 7.7.2 is for AirPort Extreme and AirPort Time Capsule base stations with 802.11ac.
Addresses an issue that prevents a USB hard drive connected to an AirPort Extreme from appearing as an available disk in Time Machine
Resolves an issue that may intermittently cause a loss in WAN connectivity
Resolves an issue that may result in a network loop
All about AirPort Time Capsule, AirPort Extreme, and AirPort Express base station firmware updates
요약 : 연결된 USB 하드 디스크가 Time Machine 디스크로 표시되지 않는 문제와 WAN 연결이 끊어지는 문제 네트워크 루프 문제 등이 해결됩니다.
For more information on using AirPort products, go to the Product Support Page at: http://www.apple.com/support/airport/