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
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). tenda d305 firmware update link
New updates often include patches for vulnerabilities that hackers use to access home networks. Once on the page, type "D305" into the search bar
Below is a guide on where to find the official download and how to install it safely. Official Tenda D305 Firmware Download Once on the page
Click Browse , select the .bin file you extracted earlier, and click Upgrade .