Internet Service Providers change infrastructure (e.g., moving from PPPoE to Dynamic IP, or updating VLAN tags). A stale firmware might lose connectivity after an ISP change.
Navigate to http://192.168.0.1 (Default Tenda gateway).
Go to System Tools > Backup/Restore.
Click "Factory Defaults." While you can technically update without resetting, a "dirty" update often leaves residual config errors. Start fresh. Tenda Ac11 Firmware Update
A: Yes, but Safari is problematic. Use Firefox or Chrome on macOS. Also, disable "Wake for Network Access" in Energy Saver settings. Internet Service Providers change infrastructure (e