1.  Locate your access point. Launch your current U.S. Robotics Wireless AP Configuration Utility. Double-click the Access Point in the Available AP list. This will launch the Web Configurator. Log in. (The default User Name is admin with no password.) 
2.  Click Tools. 
3.  Click the Browse button adjacent to the Firmware Upgrade section to locate the new firmware file. When you locate the USR5450_141.bin file, click Open. 
4.  Click the Upgrade button to begin. After the firmware is updated, you will see a The device is restarting message. Wait approximately 30 seconds before you click Back on the Web Configurator page. Since the access point has returned to default settings, its IP address may change. This will prevent access to the web configurator page after upgrading. Perform Step 7 and Step 8 first, then return to complete steps 5 and 6.
5.  Click Status to verify the firmware has been upgraded. 
6.  Configure your access point using your custom settings. 
7.  Uninstall any previous configuration utilities. Install the USR5450_Utility_1.42b1 utility.
8.  Locate your access point. Launch the Configuration Utility. Double-click the Access Point in the Available AP list. Log in. (The default User Name is admin with no password.)