D-Link wireless IP security camera based on the Cellvision CAS-630.
OpenWrt support is possible using the target Infineon/ADMtek ADM5120. There already exists experimental support for identical hardware Cellvision CAS-630W IP camera but it seems there isn't much progress.
You have two options for flashing a firmware. It's very recommendable to have the serial port ready for using it. If something goes wrong you may brick your device.
Using the web interface: only available if you have a working firmware, use the web interface an look for the firmware upgrade option, then just upload it and wait. Be aware if you upgrade a faulty firmware you'll only have the option of flashing with the next method via serial.
Using the serial console: after turning the device ON (pluging the power cable in the device) you have about 2 seconds to hit the SPACE key 3 times and you will get the following menu.
ADM Bootloader (v0.04.01 20040216)
(a) Download vmlinuz to flash ...
(b) Download vmlinuz to sdram (for debug) ...
(c) Update bootloader ...
Please enter your key :
choose (a) for flashing a new firmware, or choose (b) for loading a RAMDISK firmware. The RAMDISK firmware will not touch anything in your flash, it's just for testing. Then you'll have about 20 seconds for sending the firmware via XModem. It will take some time to transfer the firmware since XModem is really slow.
Never use the option ( c ) if you don't know what are you doing!