AirPort Base Station and AirPort Time Capsule Firmware Update 7.7.1
About AirPort Extreme and AirPort Time Capsule Firmware Update 7.7.1
This update is for AirPort Extreme and AirPort Time Capsule base stations with 802.11ac. It resolves a rare issue that may cause the hard drive in AirPort Time Capsule or a hard drive connected via USB to become unresponsive.
For detailed information on AirPort base station firmware updates, including instructions how to install the update, please visit:
All about AirPort Time Capsule, AirPort Extreme, and AirPort Express base station firmware updates http://support.apple.com/kb/HT1218
For more information on using AirPort products, go to the Product Support Page at: http://www.apple.com/support/airport/