Click Browse and select the top firmware file you downloaded. Double check the file extension – do not unzip if it’s a .bin ; do not rename the file.
Once the login screen reappears, log in and immediately perform another Factory Reset (System Tools -> Factory Defaults). This clears residual low-level settings from the old firmware. tenda d305 firmware top
Do not close the browser. Do not unplug the power. Do not press the reset button. Let the router reboot by itself. The power LED will flash, then stabilize. Click Browse and select the top firmware file you downloaded
Click Upgrade . A countdown timer will appear (usually 90-120 seconds). tenda d305 firmware top