Zte+f671y+firmware+update+2021
Since this is a managed device, the update process is handled automatically or through your ISP.
After the firmware update completes:
The 2021 firmware update addressed performance, security, and compatibility issues identified in earlier 2020 stock firmware. It was distributed via OTA (Over-the-Air) and manual update files through carrier portals. zte+f671y+firmware+update+2021