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Prior to version 1.1 of the firmware the WAP11 had a major security vulnerability from both the LAN and WLAN side. By sending a broadcast packet to UDP port 27155 with the string "gstsearch" the WAP will return your SSID, your administrative password, your WEP keys, as well as any entries in your MAC address filter table.
If you perform the upgrade there are a couple of things to know, many people have been having issues with lockups, random WAP11 restarts after the upgrade. By following the following steps you can upgrade your WAP11 v2.2 successfully and alleviate these problems.
The new firmware contains encryption to protect you against the vulnerability listed above. When you send the UDP broadcast packet to port 27155 after performing the upgrade you will only get gibberish back.