Firmware for the ZTE F670Y is not hosted on a central ZTE website because it is an ISP-customized device.
If your router is locked to a specific region (e.g., you moved countries or ISPs), you can change this via Telnet. zte f670y firmware hot
reboot to apply changes.Proceed at your own risk. Modifying router firmware or accessing hidden administrator settings can brick your device (make it unusable) or void your warranty with your Internet Service Provider (ISP). Do not attempt to flash firmware meant for a different hardware revision. Firmware for the ZTE F670Y is not hosted