My DLink DWL-8200AP Revision B does not have an IP address after firmware 2.10 upgrade. I upgraded two of these AP using a wired connection and have the same problem both devices.
Everything seems fine during the firmware upgrade. It's just that the AP no longer has an IP so you can not connect to it to configure once the firmware upgrade is complete. Tried to reset the device by holding the reset button for 15sec and can not access it using the 192.168.0.50 address.