The Time Capsule, AirPort Extreme, and AirPort Express Base Station with 802.11n* Firmware 7.4.2 update provides several fixes, including:
- Fixes some problems with extending and maintaining connectivity with extended networks
- Fixes an issue with clients that enable 802.11 "Power Save"
- Fixes connectivity issues with some third-party devices
- Fixes an issue when the base station is configured for PPPoE
- Fixes some Back To My Mac issues with connectivity and support for third-party routers
