@DollyDriver :
STEPS :
1) Download the latest version of SP Flash Tool :
[Only registered and activated users can see links Click here to register]
2) Download the TWRP custom recovery :
[Only registered and activated users can see links Click here to register]
3) Download the "2017_SU-BU.rar" :
[Only registered and activated users can see links Click here to register]
4) Unrar "2017_SU-BU.rar".
5) Copy the two zips inside your microSD.
6) Tap on Settings --> About phone --> Tap Build number seven times.
7) Tap Developer options.
8) OEM unlocking enabled.
9) USB debugging enabled.
10) Turn off the phone.
11) Open SP Flash Tool.
12) Load the scatter file inside TWRP.
13) Click on Download.
14) Connect your phone to your pc with USB to start the flash process.
15) When it finished, press "volume up" and "power" buttons simultaneously.
16) Select the first white line with volume up.
17) Press volume down to enter onto TWRP.
18) Tap on "Install".
19) Tap on "Select Storage" and tap on "Micro SDCard".
20) Tap on "
SuperSU-v2.79-SR3.zip".
21) Swipe to confirm Flash.
22) When installation is finished, swipe to reboot.
23) Be patient.
24) Tap on SuperSU icon to activate it.
25) Install "Quick Reboot Root.apk" to reboot onto TWRP without buttons.
26) Same steps for "
UPDATE-Busybox.Installer.v1.26.2-ALL-signed.zip".