"I am experiencing random reboots on my ZTE F680. Is there a firmware update available for my specific serial number?"
To update the firmware of your ZTE F680 modem, follow these steps: Zte F680 Firmware
Have a specific issue with your ZTE F680 firmware version? Check the sticker on your device and consult your ISP’s official support channels for hardware-specific binaries. "I am experiencing random reboots on my ZTE F680