If you used a fake Tenda HG9 firmware link and your device is now dead (power LED on but no network response), you can try TFTP recovery:
Because Tenda sometimes removes older models from the main download page, you may need to contact Tenda support directly via their online form or email, requesting the exact firmware for your hardware version.
Browser cache or JavaScript error, or the firmware file is corrupted. Fix: Clear browser cache, use an incognito window, or switch to Firefox. Re-download the file from the official link. tenda hg9 firmware link
Never upgrade firmware over Wi-Fi. Connect your computer directly to the LAN port of the HG9 using an Ethernet cable 1.2.2.
Cross-reference the listed firmware version with the hardware version printed on your device's sticker. Download the .zip or .bin file to your computer. Step-by-Step Tenda HG9 Firmware Update Process If you used a fake Tenda HG9 firmware
Updates optimize the 2.4GHz and 5GHz dual-band wireless channels to reduce interference and dropouts.
[!CAUTION]Recent reports have identified high-severity vulnerabilities (e.g., CVE-2026-2910) in older HG9 builds. Updating to the latest firmware is highly recommended to secure your network against these flaws. HG9 Firmware 2025/2/13 - Tenda Global(English) Re-download the file from the official link
If you run into any issues during the upgrade process, let me know: What is printed on your router's sticker? What error message or light behavior are you seeing?