How Can I install Lollipop on my Grand Prime SM-G530H (rooted on 4.4.4 kitkat)

So, I've bought a Grand Prime SM-G530H 4 months before and I've ROOTED it using Odin. it was running 4.4.4 Kitkat version.
NOW, I want to update it to Lollipop and I can't do it directly because it wont allow me to update in the software update menu.
So, What should I do to Update into Lollipop? I don't want to unroot the phone and update it from the Software update menu :)
so please tell me how to do it ;) also provide me the links ;)