Consider checking if your provider offers an upgrade to the ZTE F680-series for faster dual-band Wi-Fi 5 performance!
Once logged in, go to the Settings or Management tab. Look for Device Management and then Update Management . zte f660 firmware
Since the ZTE F660 is often provided by Internet Service Providers (ISPs), you might find the firmware on your ISP's support or download section. ISPs sometimes customize the firmware for their networks. Consider checking if your provider offers an upgrade
If your Internet Service Provider (ISP) supports it, this is the safest method: ZXHN F660 - ZTE zte f660 firmware