To know where you are going, you must know where you stand.
Before attempting to flash any "verified" content, follow these safety steps: 1. Identify Your Hardware Check the sticker on the back of your router. Older hardware, usually GPON-only.
: Users often seek verified firmware to unlock "Bridge Mode," which allows them to use their own high-end routers while using the F670L strictly as a modem. Maintenance and Updates Bridge mode on unlocked ZTE F670L - India Broadband Forum