Step 1: Verify Hardware Revision and Current Firmware Version
Download the approved firmware image certified for their network. Step-by-Step DSL-3890 Firmware Upgrade Procedure
Disclaimer: Firmware updates are performed at your own risk. Always back up your settings before updating. dsl3890 firmware link
You may have found a forum post from 2018 with a link like http://update.huawei.com/firmware/dsl3890_v2.bin . Chances are, it leads to a 404 error. Here’s why:
Before updating, check your current firmware version in the router's dashboard to see if an update is truly needed. By ensuring you have the latest firmware, you can keep your D-Link DSL-3890 Go to product viewer dialog for this item. operating at its peak efficiency. Step 1: Verify Hardware Revision and Current Firmware
D-Link Australia Support Homepage
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. You may have found a forum post from
If your router is already bricked (stuck in a boot loop), you can force a firmware flash via TFTP.
Major firmware jumps can occasionally corrupt old configuration files. If you lose connectivity, perform a factory reset. Press and hold the recessed Reset button on the back of the device for 10 seconds using a paperclip. Once the router reboots, log back into the interface and re-enter your ISP connection settings.