To download the OpenWrt firmware for the (brcm63xx/generic), you should use the OpenWrt Firmware Selector for the most stable and up-to-date versions . Note that this device is classified as an 8/64 device (8MB Flash / 64MB RAM), which is the absolute minimum for modern OpenWrt releases; newer versions may lack the LuCI web interface to save space. Download Links
Configure your computer's ethernet adapter to 192.168.1.35 (Subnet 255.255.255.0 ). Enter Recovery Mode: Power off the router. Hold the RESTART button.
Do not power off the device. It will automatically reboot when finished (usually 2–5 minutes).
Click Browse , select your downloaded .bin file, and click Update Software .
For this specific hardware, you typically need to choose the version that matches your hardware revision (A, B, or C).
Open your browser and go to http://192.168.1.1 . You should see a "Broadcom - CFE MiniWeb Server" page.