Many users stick with the factory firmware, assuming that if it works, there is no need to fix it. However, the benefits of a timely are substantial:
If an update is available, you will be prompted to download and install it. The device will reboot several times during the process. Ensure you do not unplug the power during this operation.
These are official software patches provided by the manufacturer. You can check for these in the menu under About Device System Update Firmware Reflashing:
: Protection against vulnerabilities in older Android versions.