This update to your phone will definitely breathe in a new life to the handset. Apart from that it will include host of new feature in the pack.
This impressive phablet was launched at last year MWC 2014 in Barcelona.
How to Update
The update is available for download via Over the Air download. So you should be connected to an nearest WiFi and follow the on-screen instructions if the update notification is available. If it's not there, then head to Settings > About Phone and then hit Check Now to check for latest software availability. Hit Download and then once downloaded hit Install.