: Click Choose File , select your downloaded firmware, and click Upload .

If you are experiencing dropped connections, slow speeds, overheating, or compatibility issues with new SIM cards, it is time to . Outdated firmware can lead to security vulnerabilities and poor network optimization. This guide will walk you through everything you need to know—from pre-update preparation to step-by-step installation and troubleshooting.

Updating the ZTE MF297D is a straightforward process that can be managed through its web interface or automated settings. Online/Automatic Updates

If your firmware version ends in B01 or B02 , you are significantly outdated.

For older firmware versions, the ZTE Mobile Connect app (available on Android/iOS) supports updates.