Zte F671y Firmware Update |best| 〈SECURE ✦〉

: Never perform a firmware update over Wi-Fi. A sudden signal drop can interrupt the data transfer and corrupt the device's memory. Backup Settings

Before updating, always verify the firmware source, back up your configuration, and use a wired connection. If you ever feel uncertain, contact your ISP’s technical support—they have the final word on compatible firmware versions for your specific unit.