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: Start by visiting the official Tenda Download Center. Look specifically for the "AC8" model and ensure you select the hardware version (like V1.0 or V2.0) printed on your router's bottom sticker.
Perform a factory reset by holding the button for 10 seconds if prompted or for optimal performance. AC8 User Guide - Tenda Russia(Русский) tenda ac8 firmware update
To update the firmware on your router, you can use either the automatic online method or a manual local upgrade. Option 1: Online Upgrade (Recommended) : Start by visiting the official Tenda Download Center