Recent reports have identified significant vulnerabilities in older firmware versions (like v1.0.1), including and command injection flaws. These vulnerabilities could allow remote attackers to take control of the device. Version 2.0.2 includes critical patches for these exploits and fixes compatibility issues with Smart OLT systems. Step-by-Step Upgrade Guide
You are not alone. Finding specific firmware files for older or regional Tenda models can be notoriously difficult. This guide covers the current status of the HG9 firmware link, why it is hard to find, and the safe steps you should take to update your device. tenda hg9 firmware link
If you're unable to find the firmware file on the Tenda official website, you can try searching on alternative sources, such as: why it is hard to find