Note: The upgrade process typically takes 3 to 5 minutes. Do not turn off your router, unplug the cables, or close your browser window during this process. Troubleshooting Common Upgrade Failures
Open a web browser and enter your router's default IP address into the URL bar. Common ZTE default IPs are 192.168.1.1 , 192.168.0.1 , or 192.168.2.1 . zte router firmware upgrade download link
Type your router's default IP address into the URL bar. Common ZTE defaults include: 192.168.0.1 192.168.2.1 Note: The upgrade process typically takes 3 to 5 minutes
Document version 1.0 – For network administrators and advanced home users. Common ZTE default IPs are 192
Never update router firmware over Wi-Fi, as a momentary drop in wireless signal can corrupt the installation. Where to Find Official ZTE Router Firmware Download Links
Is your router , or did you buy it independent/unlocked ?
To help narrow down the exact file you need, could you share a few details? Please let me know: Your exact (found on the bottom sticker)