How to update lollipop to marshmallow which is not available now without rooting

[Android Central Question]

How to update lollipop to marshmallow which is not available now without rooting
I am not getting updates

 

[belodion]

What device?

 

[Rukbat]

If the manufacturer writes an update for the device, you'll get it over the air as long as the device isn't rooted. If you found a supposed update that requires rooting, it's not from the manufacturer and it might even void the warranty. (Rooting always voids the warranty.)