I had a WAP11 version 2.2 that for some reason stopped responding on the LAN interface. I had parked it in my pile of junk for a while, but after a different WAP11 version 1.1 blew up on me, I decided to try an resurect this one. I never thought to try and reflash it after it died, but seems that was the ticket all along. After some web searches, I found a site that showed how to reflash it, and get it to talk to Dlink products at 22M which is better than I had. That seemed promising, so thats what I did. It all started after resetting the WAP11 v2.2 to defaults, and ....

What follows is basically a fixed up readme.txt from the zip file (data taken from Seattle Wireless Hacks) - where I have modifed it, I put it in blue

• Check if firmware of your OEM is in this directory
• Go to "update firmware" and select: YOUROEM-to-DWL900ap+_nml.bin
• Install the firmware like you would install a normal 'Linksys' update
• Switch off your AP by unplugging the power cord and re-inserting it.. restart the AP with a hardware reset (the reset button on the back.)
• Set your ip address to 192.168.0.6 your netmask to 255.255.255.0 (Note that I had to disable zonealarm and disable windows firewall which autoenabled on my xphome edition workstation)
• Install your D-Link Access point Utility.
• Start the software and if all goes well it detects a DWL 900ap+ with unknown Firmware. (press "refresh" a couple of times if necessary - failure to have firewall disabled had me spinning here but I was able to see that things were working by going to http://192.168.0.50)
• Select the firmware update that is presented to you and let it update! Wait until the green blinking light stops and press "refresh" so your AP will be detected again.
• Use tftp to upload rom.img to your AP. rom.img is the ROM Global Sun Tech puts in every D-Link before it ships. The ROM I included it the most recent one at the moment. Use the tftpc included in this file and upload rom.img to the address you gave to you AP 'the standard address is 192.168.0.50' Put the client In BINARY mode for a good transfer!
• Configure the ip and WIFI configuration and when you are done and it asks for a login, give it username admin and leave the password empty. Reconfigure your network to your usual settings and login to your improved AP.

Extra features:

• Full 22mbit support between other DWL's or reflashed wap11's! (probably also with unflashed wap11's but that hasn't been tested)
• Repeater mode! (wireless!) DCHP server (with DNS support) Scan mode for finding other AP's when AP is used in client mode.
• more logging possibilities. more filtering possibilities (you can clone a mac address from the logs) More security (setup program asks for a password and SSID broadcast can be switched off) A lot more help and info...
• Because the DWL900 AP has only one antenna, the antenna selection is not included, this is not a problem, because you can do it with the weca.htm menu. You get this by going to the IP address of your AP and adding /weca.htm to the end of the URL. You can also switch on the power saving mode.