Before you search for a , you must know two things: the existing firmware version and, more importantly, the hardware revision . Using firmware designed for a different hardware revision (e.g., V1.0 vs V2.5) will brick the device.
Once you have the correct file on your computer, follow these steps: Zte Zxhn F670l Firmware Update
If your router cannot reach the update server (or if your ISP provides you with a specific firmware file), you can update manually. Many ISP-locked routers have this feature disabled or hidden. Before you search for a , you must
Updating the firmware on a ZTE ZXHN F670L Go to product viewer dialog for this item. Many ISP-locked routers have this feature disabled or hidden
Log in to the gateway at 192.168.1.1 using the default username admin . Default passwords often include admin , 1234 , or unique codes found on the device label.