If your ISP supports it, you may see an "Online Update" or "Check for Updates" button within the admin interface. How to Check Modem Firmware - CenturyLink
Most ISPs prefer via TR-069. In this model: zte f671y firmware update
A failed can brick your router, turning it into an expensive paperweight. Avoid this by preparing carefully: If your ISP supports it, you may see
: Do not power off the device during this process. It will typically take 3–5 minutes and will reboot automatically. 3. Safety Precautions If your ISP supports it