I'm sorry no we haven't received the update yet I'm still on 6.0.1. Do you mean like mixing up the steps and finding which worked with your phone?
Oh I'll have to go back and do some rereading then, because I thought I saw some websites saying that phone was already on Nougat. If you're still on MM this should be easier I would think... hmmm
For me, it took me about 4 or 5 different threads of talking about how they rooted their Sprint S7 phone, for me to find the right instructions for myself to root my phone. But I know along the way I would miss a step, then my phone wouldn't boot or bootloop like yours. That's why I went back and printed out instructions and checked off to make sure I didn't skip anything. After awhile I could wrap my head around it.
Just saying we are all human, so it's easy to skip a step. Though it doesn't seem like you're the only one having this problem. But if all the branded US phones are pretty much rooted one way or another, I don't see why yours would be any different.