how to root Gionee Elife S Plus on Android 6.0 Marshmallow.

This is just a simple method on how to root your Gionee Elife S Plus after upgrading to Android 6.0 Marshmallow.

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Quation how can I root my Gionee Elife S Plus running on Android 6.0 (Marshmallow) ?

There are two major steps:

Unlocking the Bootloader of the Gionee Elife S Plus

Flashing the TWRP recovery.img and SuperSU.zip

Follow this steps to unlock your Bootloader of Gionee Elife S Plus HERE

Flashing the TWRP recovery.img and SuperSU method.

Download SuperSU 2.76.zip HERE
Copy SuperSU.zip to both the phone’s SD card and internal storage
Download TWRP for Gionee Elife S Plus (Marshmallow) ported by Team Hovatek HERE
Setup ADB and Fastboot on the PC using the guide at HERE
Extract and copy the TWRP recovery.img into the same folder as the fastboot.exe and adb.exe
Connect the phone to the PC via USB cord while switched On and boot it into Fastboot (as instructed in the Bootloader unlock guide)
When the phone enters Fastboot, load the TWRP recovery to the phone by typing the command below then pressing Enter "fastboot boot recovery.img"
The phone should automatically boot into TWRP recovery mode
In TWRP, if you get a prompt asking you to swipe to allow modification of the System partition, tap KEEP READ ONLY
If TWRP offers to root the phone, select NO
In TWRP recovery, tap Install
Navigate to the location of the SuperSU2.76.zip and select it
Swipe to confirm flashing of SuperSU.zip and wait till flashing is complete
Reboot the phone normally