D-Link DWL-3200AP - AirPremier - Wireless Access Point Product Manual page 44

Using the Configuration Menu
DWL-3200AP User's Manual
Tools > Firmware
Update File: After you have downloaded the most recent version of the firmware
from http://support.dlink.com to your hard drive, you can Browse
your hard drive to locate the downloaded file. Select the file and click
OK to update the firmware.
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D-Link Systems, Inc.