For additional documentation, the HG9 User Guide (2026-04-20) is also available. If you'd like, I can:
on how to access the Tenda web interface to upload this file? HG9 Firmware 2025/2/13 - Tenda Global(English) tenda hg9 firmware link
The device will reboot automatically. Do not power off the device during this process. For additional documentation
You can also directly download the Tenda HG9 firmware from the following link: tenda hg9 firmware link
Do not download just any file labeled "HG9." Using the wrong firmware can "brick" your router (make it unusable).