As is usually the case with OTA (Over-the-air) roll outs, it might take some time for the update notification to show up on your device, Or you can check if yours is available by Navigating To SETTING => ABOUT PHONE => SYSTEM UPDATE.
If Your Update has arrives it will be shown to you then is left for you to update your device but before that Note the following;
- Make sure your device is not rooted, If Rooted then Un-root before update
- Make sure your battery Percent is about 60% and Above. In other to avoid bricking of your device.