Go to Management > System Management > Resoration & Backup.
Because firmware is often customized for specific ISPs, using a generic version can sometimes disable your internet connection or VoIP services. zxhn h267a v10 firmware update link
This will 100% void your warranty and may kill your router. Only do this if you have a UART cable and know how to unbrick a router. Go to Management > System Management > Resoration & Backup
Obtaining a direct firmware update link for the is complicated because the device has officially reached its End of Service (EOS) as of October 31, 2022. Since this model is often distributed through Internet Service Providers (ISPs), updates are typically managed automatically by the provider or hosted on their specific support portals rather than a public ZTE download page. Official Status and Lifecycle End of Market (EOM): December 31, 2021. Only do this if you have a UART
If you need a firmware update (to fix a bug or security issue), you have three legitimate paths: