Zte F660 Firmware Upgrade !exclusive! [TESTED]

If your ZTE F660 is stable and not exposed to the public internet, skipping the upgrade is safer. If you must upgrade, follow this guide strictly, and always have a backup plan (like a spare ONT or ISP support number).

A V3.0 firmware will not work on V5.0 hardware. Check the sticker on the bottom of your unit. Don’t Unplug: Zte F660 Firmware Upgrade

Most modern versions of the ZTE F660 support an automatic check for updates directly from the admin panel. If your ZTE F660 is stable and not