How to Update Software (Firmware) on your TENDA D305 Keeping your TENDA D305 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. Update Software in TENDA D305

Tip: If the update resets your router to factory defaults (common), you will need to reconfigure your ISP username/password, SSID, and Wi-Fi password. Always keep a backup of these settings. Updating the software (firmware) on your Tenda D305

• If the web admin is inaccessible after upgrade: try a hard refresh, connect via Ethernet, or reboot the router. If still dead, try a factory reset and then restore or reconfigure settings manually.
• If Wi‑Fi is unstable: temporarily revert to a previous channel or region setting, or factory reset and reconfigure to rule out residual config conflicts.
• If the router is bricked during flash: check TENDA support for a recovery utility or contact their support; some routers require a hardware button or special tool to recover.

Why updates matter

Press and hold the Reset button (or WPS/Reset combo depending on version) while powering on the device. Keep holding for about 10–15 seconds until the Power LED flashes slowly (recovery mode). If the web admin is inaccessible after upgrade:

Reboot: The router will automatically reboot once the installation is complete.