WARNING: I am not responsible if your phone misbehaves in any way after you do what is said in this video, but I will try to help you fix the phone if necessary.
Practically all credit goes to the one and only @topjohnwu on twitter. Go show him some love if you got your phone rooted.
Links:
Scatter files:
SP Flash Tool: http://zipansion.com/15349025/sp-flash
Magical: http://zipansion.com/15349025/magisk
Notepad++: http://zipansion.com/15349025/notplusplus
FAQ:
I am getting an error ______. What do I do?
Try not holding any keys when flashing or vol up / vol down. Try finding scatter file for your exact phone and don’t edit it with notepad. Do not do anything else (like formatting) without commenting below, I will answer in two days, unless you are sure you wont brick your phone.
I am getting an error verified boot is enabled. What do I do?
You will have to unlock your bootloader. This means that your data has to be erased.
Does it work with ______?
If you go to cpu-z app and on top you see mediatek it will work.
Do I need a memory card?
No.
Will my data be erased / Do I need to do a factory reset?
No. .