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I could not get your script to work but I just created 2 scriptsI have noticed that doing soft reboots through xblast will retain full root rights after making various changes. But a hard reboot will lose rights again. I have to figure out how to keep full rights. Boot image seems to keep rewriting itself after hard boot.

Nope, I have the zte grand xmax plus z987, 2 of them actually, just letting you know it reads as a 970 when offso you have the grand x, not the grand x plus? Z987
If you get the latest version of TWRP for the ZMax you won't have the TWRP UI weirdness. It boots up correctly and works perfectly!TWRP acts kinda weird when you need to boot into recovery. Wait until phone goes completely asleep and then hit power. Don't change screen sleep settings in TWRP. I learned the hard way, I set settings so screen would stay on. Don't. I had to uninstall and reinstall to get back into recovery. Hope this helps everyone.
Where is do you get it from? Is there a link? And it's for the Zmax?If you get the latest version of TWRP for the ZMax you won't have the TWRP UI weirdness. It boots up correctly and works perfectly!
OK, wait, I already have it, nevermind, thank you...Where is do you get it from? Is there a link? And it's for the Zmax?