The T-Home Speedport W 502V is a IAD sold by T-Com with a ADSL2+ Annex A/B Modem, 11g Wifi and two FXS ports as well as a S0 bus connector.
|SoC||Infineon PSB 50702 E V1.3 DANUBE||XWAY DANUBE + passive heatsink|
|CPU||MIPS 24KEc network processor||32-bit, 333 or 425 MHz|
|RAM||Qimonda HYB25DC256160CE-6||32 MiB|
|Ethernet||ICplus IP101A||10/100 Mbit/s|
|WLAN||Atheros AR2417-AL1E||b/g, 2 antennas (1 internal, 1 external)|
|ISDN||Infineon, UMEC …||untested|
|Serial Port||yes||details below|
|JTAG||no||supported by SoC but no soldering pads|
|USB||no||supported by SoC but no soldering pads|
|Power||external 15V 1.2A|
Build from trunk as the latest release branch 'backfire' doesn't have the build target files. For more information about building see the build documentation.
Turn on device with reset and wlan buttons held, it should boot up into the recovery bootloader, running http on 192.168.2.1. Use the recovery bootloader to upload and flash openwrt-lantiq-danube-ARV4525PW-BRNDTW502-brnImage.
During flashing it will show "Processing, please wait……..". IMPORTANT: After a 1-2 minute timeout the page will reload itself and fail to establish the connection since it is still be busy flashing. Flashing is finished when the recovery bootloader is accessible again. Once this is done, reboot the device and it should boot OpenWRT, which you can configure using telnet to 192.168.1.1.
Due to issues with the brnboot flash layout and the dsl firmware size, you may not be able to include LuCI in the image. It is possible to replace brnboot with u-boot, however since there is no JTAG this could easily brick your device.
Working image of OpenWRT 12.09 Attitude Adjustment for W502V BRNBOOT (image at http://downloads.openwrt.org/attitude_adjustment/12.09/lantiq/danube/ has broken ethernet): http://uguu.de/~ranma/openwrt/12.09/speedport/ (WiFi, Ethernet working, DSL untested, no support for voice ports)