To update the software (firmware) on your Tenda D305 ADSL2+ Modem Router, you will need to perform a manual installation. Tenda Global ⚠️ Critical Pre-Upgrade Rules Use a Wired Connection:
How to Update Software (Firmware) on your TENDA D305 Keeping your ADSL2+ Modem Router up to date is essential for maintaining a stable internet connection, fixing known bugs, and protecting your network against security vulnerabilities. Firmware updates often improve Wi-Fi performance and add support for newer devices.
: Ensure your computer is connected to the Tenda D305 via an Ethernet cable (highly recommended for stability) or Wi-Fi.
. Do not use Wi-Fi, as a signal drop can corrupt the installation. Stable Power
The router will automatically reboot once the installation is complete.
Do NOT download firmware for TENDA D301, D303, or D306 – they are incompatible. Also avoid third-party “driver updater” tools; only use official TENDA sources.
Troubleshooting common outcomes