So a sum up here.Right on man! I am officially running 8.3 ROM with April 5th 2017 Security Patch Level! Geez.. it was not easy but I got this working!
MrMazak, I followed all your instructions on both links, so could you tell me what exactly I have on my phone? Is it rooted? Bootloader Unlocked? The phone seems to be working fine but I don't know what level of access I have. Honestly I don't even know exactly what the differences between all these terms are.
Also, do I have or not SU? One of the steps under the .bat I believe install it. How do I access it?
Thanks again!
1. Running the unlock tool unlocked the bootloader.
2. Once bootloader was unlocked that allowed twrp recovery to be installed
3. The SuperSU install with the unlock tool is "systemless" meaning it does the root in the boot.img
4. Installing a new rom (8.3 in this case) replaces boot.img
5. So to get root privileges back do the SuperSU install part from unlock tool again.