unrooting moto g xt 1033.

Hi,
I have a moto g xt1033 Indian variant currently running on stock lollipop 5.0.2 and ROOTED. I used adb tools and fastboot method to get root access. Now ota is available with lollipop 5.1 here. And I can't update my phone when its rooted. I searched for methods to unroot(remove root access) my motog g xt1033 on several sites but couldn't get satisfying solutions form any of them.

So I really need some help here.
If u guys can share on how to unroot a moto g xt1033 Indian variant running on stock lollipop 5.0.that'll be like a life saver for me.
Thank.

samsung s6 edge plus unrooting help needed

Hello,
My phone is 5.1.1

Q1 . Which firmware will work for unrooting from website below?
http://www.sammobile.com/firmwares/database/SM-G928T/

Q2. How to unroot phone SG928T to stock firmware? Will this guide work for s6 edge plus?
http://www.androidrootz.com/2015/05/...d-s6-edge.html

Thank you