If you have downloaded a firmware file from an official source like the ZTE Support Center, select the file from your computer and click Upgrade .
Open a web browser and enter the default IP address (usually ). zte+f671y+firmware+update+2021
Resolving issues with connectivity or specific service compatibility. How to Update ZTE F671Y Firmware If you have downloaded a firmware file from
Optimizing Wi-Fi stability and response times. zte+f671y+firmware+update+2021