Never disconnect the power during an update. Doing so can "brick" the device, making it unusable. How To Update Router Firmware

A major vulnerability was identified in August 2021, making updates from this period critical for protecting your network from external threats.

Updates ensure your gateway remains compatible with newer devices and the evolving standards of major ISPs. How to Access and Update Your ZTE H2640 For most users, the

Newer versions often resolve bugs that cause unexpected reboots or intermittent Wi-Fi drops.

Optimizing Your ZTE ZXHN H2640 : A Guide to 2021 Firmware Updates ZTE ZXHN H2640

If available, click "Check for updates" to let the router find the latest version automatically.