You will see a string like V300R040C01B100SP01_20210315 . The date format ( 20210315 = March 15, 2021) tells you exactly when the firmware was compiled.
Log in to your router (default IP is often 192.168.1.1 or 192.168.51.1 ) and check the Status or Device Info section to see your current version. fiberhome sr120a firmware 2021
Furthermore, the 2021 firmware enhances the SR120A's compatibility with various network environments and devices. This includes improved interoperability with a wider range of ONT (Optical Network Terminal) devices and better support for emerging network standards. Such compatibility is essential for ensuring seamless integration into existing networks and for supporting the growing diversity of devices and applications. You will see a string like V300R040C01B100SP01_20210315
