Zte F670l V90 Firmware Fixed Top ((top)) -

In the context of ONT diagnostics and firmware changelogs, "TOP" often refers to the device's ability to maintain a persistent connection over time (Time of Power) without requiring a reboot.

“ZTE F670L firmware V90 fixes an issue where the top navigation bar failed to load after a PPPoE reconnection.” zte f670l v90 firmware fixed top