Some models have multiple hardware versions (e.g., V1, V2). Ensure the download matches your hardware version exactly to avoid "bricking" (permanently damaging) the device.
For carrier-grade equipment (like ZXA10 or ZXHN series often used for fiber/ONT), the ZTE Enterprise Support Portal provides a dedicated Firmware Download Section. zte router firmware upgrade download link
If your router was provided by your internet provider (e.g., AT&T, Telkom, Rogers), you must often download firmware from the ISP's own support website . ISPs frequently use custom firmware versions that are incompatible with "generic" ZTE software. How to Find Your Firmware Download Some models have multiple hardware versions (e