Free Flash Drivers

Hi

I have updated my t-mobile note 4 to marshmallow 6.0.1 from lollipop 5.1.1 and it proved to be a nightmare for me. Random freeze, occasional restart it just sucks, so I just downgraded from 6.0.1 to 5.1.1

I am from India but I have an unlocked t-mobile note 4, So is it possible to flash t-mobile n910t with n910g Stock rom?

I have extensively searched for this but havent found any answers. Thanks in advance