How to: root , install TWRP, unlock Bootloader - Android Q&A, Help & Troubleshooting

ZTE Nubia M2 guide:
I just got a Nubia M2, and there is my tutorial to unlocking Boot loader , root and install TWRP:
1: First thing i downgrade my global rom from 1.11 to 1.06 from update software menu
2: I unlock the boot loader by MyPhone Flasher
3: Then i install TWRP
4: and install Magisk from TWRP menu
5: In the final i install my first Custom Rom
6: I enjoy it

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Thank's to yasasbandara :https://forum.xda-developers.com/member.php?u=4672130
I would like to quote his very good article from here: https://forum.xda-developers.com/showpost.php?p=76098771&postcount=143
English Guide for TWRP+Root+Custom Rom
Step 1 – Preparation
Step 2 – Installing Chinese Rom (to get an Unlocked Bootloader) via Stock Recovery
Step 3 – Using ADB to replace Stock Recovery with TWRP
Step 4 – Installing Custom/Official Rom/Roms and Rooting
Step 1:-
Prepare a SD card and copy the china rom (NX551-update_1.59.zip), Super SU Zip (SuperSU-v2.82-201705271822.zip) and any Custom Rom you wanna flash.
Get rid of any encryptions, fingerprints, passwords etc. you may have put on the phone.
Copy contacts, sms, call logs etc. (use super backup) and store on SD card.
**You can use a tool called "Nubia Emergency Tool" for backing up the service areas of the phone (optional). This backup will contain IMEI numbers and stuff. It'll help you later if you turn up with a brick after a bad custom rom flash**
Charge fully.
Download a flasher package like GizFlasher M2 v2 etc. prepared by developers in the gizchina forum, Greek Forum or 4PDA (to search for these, just use google and type nubia m2 gizchina/nubia m2 greek forum etc. Use google translation for understanding).
Step 2:-
Turn the phone off. Press Power & Volume up --> Boot to Stock Recovery. Use wipe function to wipe caches and data. Use update function and select the NX551-update_1.59.zip file and flash it. This will give you an unlocked bootloader.
Step 3:-
Boot to system. Select language and stuff. Turn on developer options. Tick OEM unlocking and USB debugging.
Use GizFlasher M2 v2 (or similar packages from other developers) to install ADB. For GizFlasher M2 v2, uncompress into a folder and run ‘Autorun.exe’ with admin rights. Answer ‘Yes’ to all and install ADB drivers systemwide.
You can check drivers by connecting the phone in “charge only” mode. Check device manager to see if ‘Android ADB interface’ is available. Give permission in the phone if required.
(If you find unknown Android devices in device manager, chose driver update (right click) --> Browse drivers on my computer --> Choose from list of drivers on the computer --> Android device --> Next --> Android ADB interface version.)
If the drivers are OK, keep the phone in charging only mode and check adb installation with a command like “adb devices” using the command prompt. This should initiate adb service and drivers (useful in Win10). Your device name will be displayed. Close the command prompt.
In the GizFlasher folder, run the "GizFlasher.bat" with administrator rights. In the window that appear, give "1" and enter for unlocking the bootloader (confirm on the phone if required).
Wait for the phone to restart.
The phone will restart in fastboot mode.
After this, type "2" and enter for flashing TWRP.
TWRP will be flashed and the phone will start in the new Recovery. You can unplug the phone from the PC.
*** Immediately after the TWRP, it’s always a good idea to setup language, time and brightness and remove screen timeout. Do a TWRP backup using the SD card.***
Step 4:-
Please note that using the stock recovery and ADB commands are usually harmless and rarely cause issues. But from this point onwards, it’s always a good idea to get a TWRP backup stored in somewhere safe (in your PC). Furthermore, if you wanna be more careful, take a backup of the service areas of your phone using a program called “Nubia Emergency Tool”. You’ll need the latest Chinese only version and instructions will be available at the 4pda forum.
Once, you’ve chosen a custom rom, please read instructions by the respective developer and follow those instructions.
Boot to TWRP recovery and do the reset. As a general rule, always wipe caches and data (full reset) and flash the rom. You’ll need to flash the SuperSU zip afterwards and wipe caches to obtain root.
If the ROM is working properly, restore your contacts, SMS etc. using super backup.
Note -
** Older phones that did not come with a higher 'Global Rom' version have their bootloaders already unlocked. In such a case, you can skip the Chinese Rom installation.
** For those who are having problems with ADB and Fastboot in newer Windows 10 versions - This is not your fault. The problem is probably with Windows. You can try to force-remove driver signature checking [restart with shift key-->troubleshooting-->Advanced-->restart-->remove sig. checking (option 7)] and do everything over.
However, do not waste a lot of time going through the same dance over and over again. The easiest way to use ADB/Fastboot is via Linux. That's an undisputed truth.
Just search for a project called FWUL (F*** Windows Use Linux) in XDA forum and follow instructions. You'll need a small pen drive (2GB or more) and that's it.

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Stock Roms:
Link to last Global version 1.11
http://rom.download.nubia.com/Europe%26Asia/M2/NX551J_Z69_EN_TSXPR17D11L111.zip
Link to 1.06 Global version:
http://rom.download.nubia.com/Europe%26Asia/M2/NX551J_Z69_EN_TSXPR17D00L106.zip
Link to last chinese version 2.04
https://drive.google.com/uc?id=1WGQNasYmBjZ5rtJGAhS9kZLFKTsM1C5m&export=download
Link to chinese version 1.59
https://mega.nz/#!AzhAkJTY!v4RYYkY4xuSE5e6xF0icQXQ4uygh-HZfSXJw_jpt6sk

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Custom Roms:
Germakrom: (my first Custom rom)
v2.10:
#Added default Nubia internet browser.
#Fixed notifications that didn't come.
#All apps now work in the background.
#bug fixes
https://mega.nz/#!IvIFSBhZ!wXLwGIzalGGGbkV_-wOvGQPBJbzWLLzHnwubTGH9jjk
GizROM:
v 1.0
#release iniziale;
#basata sul firmware internazionale NubiaUI 1.06 (Marshmallow).
https://rom.gizchina.it/upload/M2/M2_NubiaUI_M_1.10_GizRom.zip
GizROM MIUI 9 edition
v(8.2.1 EU)
Changelog 1.4:
#aggiornamento alla MIUI 9 8.2.1 EU.
http://rom.gizchina.it/upload/M2/M2_MIUI9_8.2.1_EU_francko76.zip
GizROM ColorOS Edition
Changelog 1.0:
#Versione iniziale;
#basata sul firmware 20171221 per OPPO R9s
http://rom.gizchina.it/upload/M2/M2_ColorOS_20171221_GLOBAL_francko76.zip
GizROM Flyme Edition
Changelog 1.0:
#Flyme 6.7.12.22R;
#DT2W funzionante.
http://rom.gizchina.it/upload/M2/flyme_NX551J_6.7.12.22R-francko76.zip
Le_ITA
Le ITA V1 by leitagroup Basata sulla Nubia UI 5 Cinese
Changelog:
Rimosse app cinesi;
Tradotte app di sistema;
Aggiunte Gapps;
Aggiunto Magisk per il root;
Modificato il bootanimation;
Primo avvio gestito dall'app di google;
Italiano selezionabile tra le lingue;
Avvertenze:
Al play services al primo avvio non vengono concesse le autorizzazioni, quindi dovrete skippare la configurazione iniziale che riguarda l'account google, andare nelle impostazioni/applicazioni e dare tutti i permessi al play services. Altra cosa, l'app della camera non è tradotta perchè ci sono stati dei problemi.
Traduzione:
Fatemi sapere se trovate roba non tradotta, se la trovate mandate uno screen di tutto ciò che sta da tradurre e dove trovarlo. Oltre all'app della camera anche il meteo, l'app del backup e dei temi non sono tradotte
Link:
https://androidfilehost.com/?fid=890129502657597464
Developed by @mauronofrio
MIUI Pro ROM
https://miuipro.by/rommgr/device/530

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Tools:
1.# Nubian emergency tool:
v:1.0.6:
https://mega.nz/#!75VkSJaA!FxEk5OlcRzlLRe3qfWTf2XAzYy8ghB_KjC5Jav9NhwE
V:1.1.4
https://drive.google.com/file/d/10VYEh8jtFi5Ui-7Dwcl4yohEx88qGRa7/view
https://mega.nz/#!1qBzjCYS!utR9UjlNTOHo636iIczbqjLoycss-VEdn8Ae9CqOIHI
2#GizFlasher:
https://mega.nz/#!JcE0xQCD!8PBIyIvNsMmgPqUIIG_cWldQ0jexVQblDwxF6BJCCVk
3#Nubia M2 Toolkit files: (very very useful)
https://drive.google.com/file/d/0By-NOo-lCyxBbm13Q0liejNURFU/view
4#TOOL ALL IN ONE: Nubia M2 supported
https://www.androidfilehost.com/?a=show&w=files&flid=38683
Visit :https://forum.xda-developers.com/android/software/tool-tool-one-driversunlocktwrpfactory-t3358711 for more instructions

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Kernel source:
https://github.com/ztemt/NX551J_M_kernel

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Thanks for You hard work .

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Nice wrap up of instructions.well done.
If you want in tools section add this one too
https://forum.xda-developers.com/android/development/nubia-m2-emergency-tool-1-1-4-unbrick-t3772342
Thanks for this Topic!

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GERMAD said:
Nice wrap up of instructions.well done.
If you want in tools section add this one too
https://forum.xda-developers.com/android/development/nubia-m2-emergency-tool-1-1-4-unbrick-t3772342
Thanks for this Topic!
Click to expand...
Click to collapse
Yes it's an update of nubiaan emergency tools
I posted an earlier version
I will update it soon

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parmaniec said:
Thanks for You hard work .
Click to expand...
Click to collapse
You must use the Thank You button instead of a message to keep the article readable

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Why I have a sad face in my rom?do you have an issue that I can help?
Germakrommy first Custom rom)
Ps: Earlier version you put don't work for Nubia m2 that's why I told you to put this one I posted.

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GERMAD said:
Why I have a sad face in my rom?do you have an issue that I can help?
Germakrommy first Custom rom)
Ps: Earlier version you put don't work for Nubia M2 that's why I told you to put this one I posted.
Click to expand...
Click to collapse
Sad face was inadvertance by the
For me Nubia Emergency tool 1.0.6 works fine for me, but i update to the last as you suggested .

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As for backup it works.but previous versions don't work for unbricking Nubia M2.

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Sad news for us

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moyses said:
Sad news for us
Click to expand...
Click to collapse
Screenshot
Gesendet von meinem ONE A2001 mit Tapatalk

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For 20 days I'm using the Miui Pro 9.5.2.0 chinese stable, to me this is the best custom rom for the Nubia M2.
I only see two problems...
First, this rom don't has the NeoVision camera
Second, usb debug not working, I tried enable, disable, revoke permissions, editing build.prop etc...
I'll wait to the next atualization
Congratulations to Miui Pro team developers! :good:

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THANK YOU!
THANKS for the hard work guys , i really appreciate it a lot. CHEERS:good:

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when i try to install twrp its show waiting for device in cmd, how to fix that ? help me please

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Hi Guys. I successfully unlocked the bootloader and installed LOS 15.1.
Is it possible to flash the internatonal stock rom? Any fastboot or twrp based solution?
Thanks.
AE

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Please help me, im using twrp version 3.2.1 that recommend for LOS 15.1 rom. But when i try to install magisk or something that .zip format via twrp (like nubia camera.zip) its always reset my handphone, all my application is gone, please help me fix this mate, please.