TMO D851 D85130g Downgrade

[billard412]

I've looked high and low for this simple yes or no answer. I want to purchase this phone with the intention on rooting it. Its running the newest firmware D85130g (July 2017) and needs to be downgraded to achieve root. I saw some people say they couldn't do it. Is that true or can the latest version be downgraded like the others? Thanks in advance