If the DSL-124 becomes unresponsive (boot loop, no web UI, power LED flashing slowly):
(e.g., Rev A1 or I1), which is found on the label on the bottom of the device. Step-by-Step Firmware Upgrade Process How to upgrade the firmware on your D-Link router
: Never update firmware over Wi-Fi. A dropped signal during the process can "brick" the router, making it inoperable. Connect your PC directly to one of the router's LAN ports using an Ethernet cable Backup Your Settings