If you had a WDS network secured by WPA and then removed any of the WDS nodes, this could cause a memory leak resulting in the need to reboot your WDS network nodes Improved reliability of WDS networks when using WPA security. Resolves a potential problem with PPPoE configurations when updating from 5.4 or earlier This visual feedback lets you know you’ve held the button long enough to trigger a hard reset With this firmware version pressing and holding the reset button for more than 5 seconds will cause the LED to flash rapidly. Improved printing performance when printing to USB printers connected to the AirPort Extreme.- Hard reset behavior is improved. Certain PPP or PPPoE connections (commonly used with DSL ISPs) could encounter a situation where the AirPort Extreme could not communicate with the ISP, requiring the base station and/or the ISP’s modem to be rebooted. This issue is improved in the 5.5 firmware. Certain DNS traffic could affect AirPort Extreme performance. The 5.5 Firmware Update improves performance and other concerns related to FTP, RTSP, IPSec, TCP, UDP, and other IP protocols. This issue is improved in the 5.5 firmware update. In certain situations wireless clients could send certain types of data which could cause the AirPort Extreme to stop transmitting data. All AirPort Extreme and AirPort Express units must be upgraded to the latest appropriate 5.5 or 6.1 firmware. This results in better WDS network connectivity. Improved reliability for WDS networks - WDS nodes will now check for the presence of other WDS nodes. All AirPort Extreme and AirPort Express units must be upgraded to the latest appropriate 5.5 or 6.1 firmware before the network can be secured with WPA. WPA security for WDS networks - WDS networks made up of AirPort Extreme and AirPort Express base stations can now be secured with WPA-Personal security. To determine which model of AirPort Extreme you have, check this article. Other models of AirPort Extreme still support only one single USB-attached printer. Multiple printer support for the “Power over Ethernet” model of AirPort Extreme - The “Power over Ethernet” model of AirPort Extreme now allows multiple USB printers to be connected through a USB hub to the AirPort Extreme. USB printer renaming - USB printers connected to the AirPort Extreme can now be renamed by using the AirPort Admin Utility (version 4.1 or later). This application is available for use on Mac OS X computers (10.3 and later) and on Microsoft Windows 2000 or XP. AirPort firmware updates are now packaged in a new utility application which simplifies the process of installing firmware updates. The following items were part of the previous 5.5 release and are also included in this firmware: With the 5.5.1 firmware these printers are again recognized by the base station. Resolved an issue with certain printers which were no longer recognized by the base station after the 5.5 firmware update was installed. Resolved an issue with inbound passive FTP to a port-mapped computer on the network. If you had a WDS network secured by WPA and then removed any of the WDS nodes, this could cause a memory leak resulting in the need to reboot your WDS network nodes. Resolves a potential problem with PPPoE configurations when updating from 5.4 or earlier. This visual feedback lets you know you’ve held the button long enough to trigger a hard reset. Installation steps for this firmware are listed under Step 3 of AirPort Extreme: How to Update a Base Station's Firmware. Though some features (printer renaming, WPA security for WDS networks) are not available to 10.2.8 users, there are other issues resolved in this update and this update is recommended for your AirPort Extreme base station. Some of the features mentioned in these release notes require AirPort 4.1, which is available only for Mac OS X 10.3 or later. Users with Mac OS X 10.3 or later, Windows 2000, or Windows XP can download a firmware updater tool at the AirPort Support page. This posting contains the 5.5.1.basebinary and is suitable for customers using Mac OS X 10.2.8 to update their AirPort Extreme base station.
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