We can see that Motorola has continuously rolling out the latest version of Android update for its various Smartphones. Now the first generation of Motorola Moto G LTE unlocked versions is getting update to Lollipop 5.1 in USA. The update is comes through OTA (Over-the-air) and it carries the build version 21.11.56.en.US.
The latest OS update brings Material design UI, better control over notifications, new pull-down menu for Bluetooth and Wi-Fi in quick settings, an improved battery saver, device protection, as well as several stability improvements and bug fixes.
The update notification should automatically pop up on your device notification bar. If it’s not, don’t forget to check it manually by heading to Settings -> About Device -> Software Update.