Newer firmware versions allow auto-reboot. Set it to reboot every Sunday at 3:00 AM to clear memory leaks.
No. The Tenda F6 is a legacy web-interface router. It does not support app-based updates. You must use the Ethernet + browser method. tenda f6 firmware update
Once you have the correct .bin file, you can flash the router. Newer firmware versions allow auto-reboot
Before starting the update, verify these details to avoid "bricking" your router (making it unusable): tenda f6 firmware update