Table Of Contents
Release Notes for Cisco Aironet 350 and CB20A Client Adapter Firmware 5.40.10
This document contains the following sections:
This document describes system requirements, important notes, new and changed information, upgrade procedures, and caveats for Cisco Aironet client adapter firmware version 5.40.10.
You need these items in order to install client adapter firmware version 5.40.10:
•A computer running one of these operating systems:
–Windows 2000 or XP
–Windows CE 3.0, 4.0, 4.1, or 4.2
Note Client adapter firmware version 5.40.10 is not supported for use with Windows 98, 98 SE, NT, and Me.
•One of these Cisco Aironet client adapters:
–350 series PC, LM, PCI, or mini PCI card
–CB20A PC-Cardbus card
Note Client adapter firmware version 5.40.10 is not supported for use with Cisco Aironet 340 series client adapters.
•One of these Cisco Aironet client adapter software installation packages:
–For Windows: Cisco Aironet 340, 350, and CB20A Install Wizard version 1.3, which includes PC, LM, and PCI card driver version 8.5; mini PCI and PC-Cardbus card driver version 3.8; ACU version 6.3; ACM version 2.3; LEAP security module version 6.2; EAP-FAST security module version 1.0; PEAP security module version 1.01; and EAP-SIM security module version 1.0
–For Windows CE: Cisco Aironet PC and LM card driver and client utilities version 2.50
•Access points to which your client adapter may attempt to authenticate must use the following firmware versions or later: 12.00T (340, 350, and 1200 series access points) or Cisco IOS Release 12.2(4)JA (1100 series access points).
Note To use WPA or fast roaming, access points must use Cisco IOS Release 12.2(11)JA or later. To use radio management (RM), access points must use Cisco IOS Release 12.2(13)JA or later.
Not Supported on Linux and Mac OS Operating Systems
Client adapter firmware version 5.40.10 is not supported for use on Linux and Mac OS operating systems.
Cisco Aironet Software Requires Completion of Encryption Authorization Form
In order to access Cisco Aironet software from the Software Center on Cisco.com, you must fill out a form to receive authorization to download encrypted software. Registered Cisco.com users are required to fill out the form only once, but public users must do so once each session, each time software is downloaded. A form is automatically created for public users. The form for registered Cisco.com users is at the following URL:
New and Changed Information
This section describes new and changed information for Cisco Aironet client adapter firmware version 5.40.10.
WPA Migration Mode Now Supported by Clients
Client adapter firmware version 5.40.10 and the software components included in Cisco Aironet client adapter Install Wizard version 1.3 now support Wi-Fi Protected Access (WPA) migration mode for 350 series and CB20A cards. WPA migration mode is an access point setting that enables both WPA and non-WPA clients to associate to an access point using the same SSID. To use this feature, the access point must be configured for migration mode (WPA optional with TKIP+WEP128 or TKIP+WEP40 cipher).
Radio Management Support on CB20A Cards
In Windows ACU version 6.3 the Enable Radio Management Support parameter has been added to the Advanced (Infrastructure) Parameters screen in ACU for CB20A PC-Cardbus cards. Checking this check box enables the access point to which the client adapter is associated to control the use of radio management (RM), provided RM is enabled on the access point. RM, a component of the Cisco Structured Wireless-Aware Network (SWAN), is a system-wide feature that involves multiple infrastructure nodes. The RM feature on the access point acts on radio measurement requests from other network devices to instruct the access point and its associated clients to perform required radio measurements and then report them.
This parameter is available in Windows ACU version 6.2 or later for 350 series client adapters using firmware version 5.30.15 or later and in Windows ACU version 6.3 or later for CB20A client adapters using firmware version 5.40.10 or later.
Note Access points must use Cisco IOS Release 12.2(13)JA or later to enable RM. Refer to the documentation for your access point for instructions on enabling this feature.
Note Refer to this URL for additional information on SWAN:
Upgrading to a New Firmware Version
Caution To minimize the risk of a power failure during the firmware flashing process, which could render your client adapter inoperable, Cisco recommends that your computer be plugged into AC power or have a fully charged battery at the start of flashing. If a power failure does occur, follow the instructions in the "Obtaining Technical Assistance" section to contact TAC for assistance.
This section describes how to upgrade to client adapter firmware version 5.40.10 on a computer running the Windows 2000 or XP operating system.
Note Refer to the Cisco Aironet 350 Series Wireless LAN Client Adapters Installation and Configuration Guide for Windows CE (part number OL-1375-04) for instructions on upgrading the firmware on a Windows CE device. This document is at the following URL:
Finding the Firmware Version
To find the firmware version that your client adapter is currently using, open ACU and click the Status icon. The Firmware Version field on the Status screen shows the firmware version.
Upgrading the Firmware
Follow these steps to upgrade your client adapter's firmware to version 5.40.10.
Note When you upgrade your client adapter's firmware using ACU, the Automatically Load New Firmware When NDIS Driver Is Updated parameter on the Aironet Client Utility Preferences screen becomes disabled (or unchecked) automatically to prevent the newly loaded firmware from being overwritten by the driver. If you ever want to enable this parameter, you must recheck the check box.
Step 1 Use the computer's web browser to access the following URL:
Step 2 Choose Option #2: Aironet Wireless Software Display Tables.
Note You can download software from the Software Selector tool instead of the display tables. To do so, choose Option #1: Aironet Wireless Software Selector, follow the instructions on the screen, and go to Step 7.
Step 3 Click Cisco Aironet Wireless LAN Client Adapters.
Step 4 Under Individual Files, find the client adapter firmware.
Step 5 Click the link that corresponds to your client adapter's model number (such as 350 series).
Step 6 Click the latest firmware file for your specific client adapter type (such as CB or MPI).
Note The firmware for PC, LM, and PCI cards is labeled PCMCIA-LMC-PCI, the firmware for mini PCI cards is labeled mini PCI or MPI, and the firmware for PC-Cardbus cards is labeled CB.
Step 7 Complete the encryption authorization form; then read and accept the terms and conditions of the Software License Agreement.
Step 8 Click the firmware file again to download it.
Step 9 Save the file to a floppy disk or to your computer's hard drive.
Step 10 Find the file using Windows Explorer, double-click it, and extract the image file to a folder.
Note To extract the file, click Browse on the WinZip Self-Extractor screen, select the folder in which you want the file to be placed, and click OK and Unzip. After the file is extracted, click OK to close the screen.
Step 11 Make sure the client adapter is installed in your computer and is operational.
Step 12 Open ACU and click the Load Firmware icon. The Load New Firmware screen appears (see Figure 1).
Figure 1 Load New Firmware Screen
Step 13 Find the location of the new firmware in the Look in box.
Step 14 Click the firmware image file (*.img) so that it appears in the File name box at the bottom of the screen.
Step 15 Click the Open button. A progress bar appears while the selected image is loaded into the client adapter's Flash memory.
Step 16 Click OK when the "Firmware Upgrade Complete!" message appears. The OK button cannot be selected until the process is complete or an error occurs.
The following caveats have not been resolved in client adapter firmware version 5.40.10.
•CSCeb85992—Client scanning problems with LEAP
Clients using LEAP sometimes experience scanning problems, such as sending probe requests in only the current channel rather than scanning through all channels.
•CSCec33568—Full SSID may not appear on ACU and ACM Status screens
Some characters may be dropped from the end of the SSID on the ACU Status screen and the ACM Connection Status screen. This issue has no impact on client operation or performance.
Getting Bug Information on Cisco.com
If you are a Cisco registered user, you can use the Cisco TAC Software Bug Toolkit, which consists of three tools (Bug Navigator, Bug Watcher, and Search by Bug ID Number) that help you to identify existing bugs (or caveats) in Cisco software products.
Access the TAC Software Bug Toolkit at the following URL:
For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at
Click Hardware Support > Wireless Devices. Then select your product and Troubleshooting to find information on the problem you are experiencing.
For more information about Cisco Aironet 350 and CB20A client adapters, refer to these documents:
•Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows, OL-1394-08
•Cisco Aironet 350 Series Wireless LAN Client Adapters Installation and Configuration Guide for Windows CE, OL-1375-04
•Release Notes for Cisco Aironet 350 and CB20A Client Adapter Install Wizard 1.3 for Windows, OL-5515-01
•Release Notes for Cisco Aironet Client Utilities 2.50 and Driver 2.50 for Windows CE, OL-5517-01
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Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, the Cisco Technical Assistance Center (TAC) provides 24-hour-a-day, award-winning technical support services, online and over the phone. Cisco.com features the Cisco TAC website as an online starting point for technical assistance. If you do not hold a valid Cisco service contract, please contact your reseller.
Cisco TAC Website
The Cisco TAC website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The Cisco TAC website is available 24 hours a day, 365 days a year. The Cisco TAC website is located at this URL:
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Opening a TAC Case
Using the online TAC Case Open Tool is the fastest way to open P3 and P4 cases. (P3 and P4 cases are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Case Open Tool automatically recommends resources for an immediate solution. If your issue is not resolved using the recommended resources, your case will be assigned to a Cisco TAC engineer. The online TAC Case Open Tool is located at this URL:
For P1 or P2 cases (P1 and P2 cases are those in which your production network is down or severely degraded) or if you do not have Internet access, contact Cisco TAC by telephone. Cisco TAC engineers are assigned immediately to P1 and P2 cases to help keep your business operations running smoothly.
To open a case by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
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For a complete listing of Cisco TAC contacts, go to this URL:
TAC Case Priority Definitions
To ensure that all cases are reported in a standard format, Cisco has established case priority definitions.
Priority 1 (P1)—Your network is "down" or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
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Obtaining Additional Publications and Information
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•iQ Magazine is the Cisco bimonthly publication that delivers the latest information about Internet business strategies for executives. You can access iQ Magazine at this URL:
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