Hello Grand X Max+ owners. I decided to post this since there does not seem to be an existing root guide for the Grand X Max+. Here, I will tell you step by step how to root your device the right way so that you don't end up with a shiny new paperweight.
EDIT: EVEN THOUGH KINGROOT HAS WORKED PERFECTLY FOR THIS PHONE FOR QUITE SOME TIME, PEOPLE ARE NOW REPORTING THAT IT HAS BRICKED THEIR PHONES. THIS COULD BE USER ERROR OR THIS COULD BE A SIDE EFFECT OF KINGROOT USING A DIFFERENT EXPLOIT THAN BEFORE. YOU HAVE BEEN WARNED.
[1] Download and install Kingroot.
You can get Kingroot from
http://www.kingroot.net
Download and Install ZTE Zmax TWRP app by Hroark13. Be sure to hit the like button and thank him for his work. I promise you it's free!
You can get ZTE Zmax TWRP from
http://goo.gl/WwJzYW
Download the SuperSU recovery zip from
http://download.chainfire.eu/supersu
If you are running lollipop 5.1 then make sure the option to enable OEM unlocking in developer options is checked.
[2] Open and run Kingroot in order to get temp root (temp root means that as soon as you reboot the phone you will lose root). It may take several times to work. If Kingroot fails you need to open your app drawer and long press on the Kingroot icon and drag it up to the top of the screen where it says "app info" and then clear cache and data in that order then power off the phone and then turn it back on by holding the power button. Then run Kingroot again. Do this as many times as you have to in order to get temp root.
[3] Open ZTE Zmax TWRP app and press the button that says "Install Recovery". If you get a prompt asking for root access then allow it. You should then get a notification saying " Success". This means that you have now replaced your stock recovery with TWRP custom recovery.
[4] Now uninstall Kingroot and reboot into TWRP. You can reboot into TWRP by bringing up the power menu and selecting the reboot option, then confirm that you want to reboot, then hold the volume up button until you enter TWRP recovery.
[5] Once you have booted into TWRP, make a nandroid (TWRP backup) of system, boot, and data. This step is important.
[6] While you are still in TWRP recovery, go back to the main screen and select the "Install" option. Navigate to the Download folder on your internal storage and select UPDATE-SuperSU-v2.46.zip and swipe to install, then reboot system. Once you reboot you will have permanent root.(The exact version of SuperSU that you have may vary. At the time I wrote this post it was v2.46 but has since been updated to v2.76)
[7] Reboot back into Android and install Terminal Emulator from the
Play Store and open it. You need to do 2 commands to remove the system write protection and gain full root capabilities. First, typeand grant root permissions to terminal emulator. Next typeand once the phone boots back up you will have full root without the need for switcher zips, apps, or scripts. All credit for this method of disabling the write protection goes to hroark13.
If I have helped you please hit the like button.