I want to upgrade my samsung galaxy grand prime to Lollipop

Hi Everyone
I have Samsung galaxy grand prime
SM-G530H
Android version
4.4.4
Baseband Version
G530HXCU1AOE3
And it is made in Vietnam and I want to upgrade its android version to 5.0.2 Lollipo
Then what will be the process
Please tell me from beginning Because this mobile is new and not rooted yet and not modified