【ZenFone 2 ZE551ML】Android 6.0 Marshmallow update

My asus zenfone 2 not a volte plz update

Update for my smartphone Asus x013d Android 6.0.

I update this firmware. But when I want to open facebook or messenger, It show me that, "Unfortunately facebook stopped its process." I also try to uninstall this, but nothing to be happen. There have no option to uninstall this. How can I use it?

If I update my operating system through manual update, then what will be warranty of this phone?? Will the warranty be valid or not??