AirPort v1.2

is available for download (4.6 MB .bin) from Apple's web site. From the TIL, "New features in AirPort 1.2: AirPort 1.2 provides enhanced performance, compatibility, stability, and functionality. AirPort 1.2 includes the complete software base station feature. The AirPort 1.2 base station software now supports closed networks. By choosing to create a closed network, you can hide the name of the network created by the AirPort Base Station. Users must know the exact network name to join the AirPort network, providing an additional level of security. For improved compatibility, the AirPort 1.2 base station software has a revised default configuration. The new default configuration does not distribute IP addresses (DHCP) or share a single IP address (NAT) on Ethernet, and disables AirPort-to-Ethernet bridging. You can change these settings in the Network tab of the AirPort Admin Utility."