Locate the text reading or "H/W Ver" (e.g., A1, B1).
The DSL-3890 is heavily deployed in this region. Access the official D-Link AU Support Page or NZ Support Page and enter "DSL-3890" into the search bar to locate the downloads tab.
Never update router firmware over a Wi-Fi connection. If the wireless signal drops during the flashing process, the router can become permanently unresponsive (bricked). Connect your computer directly to one of the yellow LAN ports on the DSL-3890 using an Ethernet cable. Step 4: Access the Router Management Interface Open a web browser on your connected computer.
Have you successfully updated your DSL3890? Did you find a working firmware link? Always share the official source, never the file itself, to help keep the community safe.
: For other regions, check the D-Link Global Download Center or the D-Link Technical Support site. How to Manually Update Firmware
Before attempting to flash a file, check your current firmware version to ensure the update is actually newer.
The firmware for the DSL3890 is typically provided by the device manufacturer, ZTE ( Zhongxing Telecommunications Equipment Corporation). The firmware is responsible for managing the device's hardware and providing the necessary functionality for internet connectivity.
Look at the sticker on the underside or back of your DSL-3890. Note down the (e.g., H/W Ver: A1) and the current Firmware Version (e.g., F/W Ver: 1.00). You must download firmware that matches your exact hardware revision. Step 2: Download the Firmware File
Always connect your computer to the router using an Ethernet cable . Updating via Wi-Fi is risky and can "brick" the device if the signal drops.
The user manual clearly states: “To upgrade the firmware, you must first download the relevant file from ” . However, when that link fails, your next best steps are: