1 - Power off your device.
2 - Install the factory tool and make sure to create a desktop icon.
3 - Open the factory tool.
4 - Now here's the important part.
5 - Click on firmware tab and load the philz_recovery.fls then click run.
6 - Now connect your device via usb cable and don't press anything.
*** It should show green color if it shows red color then repeat the steps above.***
7 - After that click on stop then close the factory tool.
8 - Now to go to philz recovery you need to hold down the power button and volume up button at the same time.
9 - When you see Philz recovery go to Install zip then choose Install zip from the sideload. This is the only way to root this device so do not choose sdcard it won't work choose sideload.
Now to install SuperSu I used SuperSu 2.46 here it's how you do it via sideload. Connect your device to a pc ***make sure it's in adb sideload mode***
adb devices adb sideload UPDATE-SuperSU-v2.46.zip
NO DO NOT POWER ON YOUR DEVICE IT WILL NOT BOOT UP SO FOLLOW THE STEPS BELOW TO BOOT YOUR DEVICE WITH ROOT ACCESS
Now open up factory tool again MAKE SURE YOUR DEVICE IT'S POWERED OFF then reflash the STOCK boot.fls and recovery.fls back. Flash the recovery.fls first then disconnect the usb cable AND POWER OFF AGAIN BY HOLDING DOWN THE POWER BUTTON then flash the boot.fls. Make sure your device it's powered off each time you flash