A login window will appear with fields for username and password. The factory default credentials for almost all Tenda routers, including the D305, are:

Select the sub-menu labeled or Software Update . Click the Browse or Choose File button.

Before starting the update, you must obtain the correct firmware file for your specific hardware version. Visit the official Tenda Support Center . Search for to find the product page.

Before jumping into the “how,” it is important to understand the why . Many users neglect firmware updates, but here’s why you should prioritize them:

Upgrading firmware can sometimes reset your router to its factory default settings. To avoid re-entering your ISP username, password, and Wi-Fi configurations manually, save a backup file first.

Download the ZIP file to your computer and it. You are looking for a file ending in .bin or .trx . Step 2: Access the Router Admin Panel Open a web browser (Chrome, Firefox, or Edge).

: Connect your computer directly to the TENDA D305 using an Ethernet cable. Do not attempt a software update over Wi-Fi, as wireless signal drops can corrupt the installation.

: Ensure your router and computer are plugged into a stable power source. A power outage during an update can permanently damage the hardware.

Firmware files are usually downloaded in a compressed .zip or .rar format. Use a program like 7-Zip or WinRAR to extract the .bin firmware file. Save this .bin file in an easily accessible location on your PC.

Once inside the dashboard, click on or System Tools from the main menu. Look for the Backup/Restore option.

Step 3: Back Up Your Current Settings (Optional but Recommended)

If the file is rejected, double-check that you didn't download firmware for a different model or hardware version.

Click the or Update button to initiate the installation process. Step 4: Finalize and Verify the Upgrade