unless you are 100% sure it’s compatible.

Before making changes, save your current settings so you can restore them if something goes wrong.

: Features 802.11b/g/n (2.4GHz) with 2x2 MIMO technology for stable wireless coverage. How to Check and Update English Firmware ONT ZTE F609 V3 V5.2 & F660 V8.0

You cannot download random firmware. Installing the wrong .bin file can your device (turn it into a useless paperweight). Follow these steps:

: Supports Bridge, Router, and AP (Access Point) modes, allowing it to function as a home gateway or a simple bridge for secondary routers. How to Update ZTE F609 Firmware