There are many ways to successfully upgrade your Android mobile device to the the latest android version. You can update your gadget to Lollipop 5.1.1 or Marshmallow 6.0 from Kitkat 4.4.4 or early versions.
You can choose one of popular methods:
1. The most easy way is update Kitkat 4.4.4 to Lollipop 5.1.1 or Marshmallow 6.0 by Wi-Fi connection or on mobile data manually. To do this go to settings on your device and update (see step-by-step).
2. Use original software to update with use popular Odin3. See video:
3. Use failproof method of installing any Android 6.0 Marshmallow custom ROM using TWRP:
That’s all. To easy update from Kitkat 4.4.4 to Lollipop I’m recommend to use the first way ().