Unplug the telephone/DSL line from the RJ-11 port of the router. Incoming data or line sync attempts during a flash can interrupt the internal storage write process.
Open a web browser and type 192.168.1.1 into the address bar.
: If a new firmware version is available, download it to your computer. Ensure that you download the correct file for your device to avoid any issues. dsl2520uz2 firmware new
Do not start the firmware update process without taking these precautions:
Once you know your hardware revision, you can find the correct and latest firmware. D-Link hosts all the official firmware on their FTP server. The most recent recommended versions are: Unplug the telephone/DSL line from the RJ-11 port
Which are you located in, so I can help locate the exact official download link?
Connect your computer directly to the router's LAN port with an Ethernet cable. : If a new firmware version is available,
Before you begin the update process, it is critical to prepare to avoid bricking (permanently damaging) your device.