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Root [STATUS UPDATE 6/6/15, See OP] BUTTERNOOB Stock 4.4.4 v2

Failed to create backup of system/bin/app_process?
For butternoob u want xposed installer version 2.6.1.
U need r/w so u need to flash the switcher zip
Launch xposed installer then to framework then install/update
Reboot
Optional flash restore
Done
 
When attempting a fresh installation after the first boot you're prompted with a dialog box attempting to force the 194mb update and won't allow you to sign in to Google or get to the home screen.
 
How do you Mount r/w? I've tried the terminal emulator. What and where is the switcher.zip also?

--solved--
 
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I got root, and was able to boot into recovery...however, when I flash this rom, it's says successful in TWRP, but when it reboots it says: "Security Error: This phone has been flashed with unauthorized software & is locked...."

Suggestions?
 
I got root, and was able to boot into recovery...however, when I flash this rom, it's says successful in TWRP, but when it reboots it says: "Security Error: This phone has been flashed with unauthorized software & is locked...."

Suggestions?

What version of zmax do u have?
 
I have a tmo...tried to flash the zmax 4.4. stock, as well as the BN 4.4, both do the same thing.
It sounds like T-Mobile and ZTE pushed an update that locks the bootloader so that it does a security check before it boots. You installed the T-Mobile stock ROM and it still wouldn't boot?
 
Yeah, I'm thinking there is something weird about this...that message took me by surprise as well.. I'm VERY familiar with rooting, done it to many diff devices on many diff carriers... (although this is my first with this device) and this has me baffled. Tried putting the stock back on, and it flashes (meaning I have access to /system) but then it gives me that message. I've tried adb sideload, but it doesn't recognize the device in the command prompt. Any other ideas?
 
Yeah, I'm thinking there is something weird about this...that message took me by surprise as well.. I'm VERY familiar with rooting, done it to many diff devices on many diff carriers... (although this is my first with this device) and this has me baffled. Tried putting the stock back on, and it flashes (meaning I have access to /system) but then it gives me that message. I've tried adb sideload, but it doesn't recognize the device in the command prompt. Any other ideas?

Try the unrooted stock of T-Mobile ROM. If it boots lest u know its rootable
 
That one is your best bet. Just keep in mind that if the bootloader is locked down as hard as you are saying, your phone still might not work because of the fact that it came with a newer firmware. We are in uncharted territory here(as far as the zmax goes anyway). It is possible that the security check won't allow that ROM to boot because only the firmware that came on your phone and newer firmwares released after the one that came on your will pass the check.
 
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