Apple has released three AirPort Base Station updates for Mac OS X 10.4.2; Mac OS X 10.3.3 and Windows systems.

The updates are available using Software Update (on a Mac) or for direct download from Apple’s website. It brings systems up to AirPort 4.2, and supports all AirPort models, including AirPort Extreme and AirPort Express, the company explained.

Software release notes explain: “This update fixes compatibility with WiFi Protected Access (WPA2) security software on AirPort Express and AirPort Extreme base stations. This update also resolves IPv6 link local configuration issues.”

WPA2 requires an AirPort Extreme-equipped Mac. Also known as IEEE 802.11i, WPA2 beefs up wireless security and adds encryption using the Advanced Encryption Standard (AES).