Once on the page, type "D305" into the search bar. This will bring up the latest available versions (such as V1.0.0.x). How to Update Your Tenda D305 Firmware

Grab the latest firmware from the link above. It will usually arrive as a .zip or .rar folder. Extract it to find the .bin file.

Navigate to Tools or System Tools and select Firmware Upgrade .

Click Browse , select the .bin file you extracted earlier, and click Upgrade .

If your D305 frequently drops the internet connection, a firmware update often fixes underlying driver issues.

Open a web browser and type 192.168.1.1 (the default IP) into the address bar. Log in with your credentials (default is usually admin for both).

New updates often include patches for vulnerabilities that hackers use to access home networks.