Official firmware update links for the ZTE ZXHN H267A V1.0 (often referred to as V10) are typically provided directly by your Internet Service Provider (ISP) or via the ZTE Support Portal.
While official public links are no longer maintained, you can still check your specific device for any remaining carrier-pushed updates: zxhn h267a v10 firmware update link
To locate your ISP’s official firmware page: Official firmware update links for the ZTE ZXHN H267A V1
Because most ZXHN H267A units are provided by Internet Service Providers (ISPs), firmware is typically managed directly by the provider. Official ZTE Sources : You can search for software and firmware packages on the ZTE Terminal Support Page ZTE Download Center ISP-Specific Firmware : If your router was provided by an ISP like Superonline zxhn h267a v10 firmware update link