Downloading firmware from unofficial file-hosting sites or forums can result in:
D-Link DSL-124 Firmware Update Download - Latest Version Available! D-link Dsl-124 Firmware Update Download --BEST
To update the firmware on your D-Link DSL-124 router, you must download the specific file corresponding to your device's hardware version from the official D-Link Support page D-link Dsl-124 Firmware Update Download --BEST
No. The DSL-124 lacks a smartphone app or OTA (over-the-air) updates. You must use a PC browser. D-link Dsl-124 Firmware Update Download --BEST
Click "Browse" or "Choose File" and select the .bin firmware file you downloaded.
Never update firmware over Wi-Fi. A dropped signal during the process can brick your device. Use an Ethernet cable to connect your PC directly to the router.