Firmware Version- 3.16.0 0.9.1 V6031.0 Build 210407 Rel.7370n — -tl

: This might represent a more specific build or version identifier, possibly related to the device hardware it is targeted for.

: They resolve bugs that might cause your router to reboot unexpectedly or drop Wi-Fi signals. : This might represent a more specific build

If your build number is lower than 210407, you are out of date. you are out of date.