[Maze Alpha ROMs, Kernels, Recoveries, & Other Deve] dreambo:
Root + TWRP 3.2.1

3 Methods to root MAZE Alpha

Note: Method II is the most universal and must works with almost any official ROM

I- Method 1 : flashing modified Magisk boot.img

1. make sure to have already installed the version 20170816

2. reboot the phone in fastboot mode (phone off -> Vol Up + Power or "adb reboot bootloader")

3. unlock the bootloader if not already done : fastboot flashing unlock (if not works, in android development setting set the unlock bootloader and then retry)

4. unzip and then flash the attached boot image : fastboot flash boot new-boot.img

5. reboot your phone: fastboot reboot

6. install the MagiskManager apk v14

7. Voila :)

I have used this Magisk guide to create it

I used old manual guide :

adb shell "rm -rf /data/local/tmp/*"
adb push META-INF/com/google/android/update-binary common magisk_inject boot.img /data/local/tmp
adb shell "cd /data/local/tmp/magisk_inject; mv ../common/* .; chmod 755 *; sh ../update-binary indep boot_patch.sh ../boot.img; mv ../bin/busybox busybox"
adb pull /data/local/tmp/magisk_inject/new-boot.img
adb shell "rm -rf /data/local/tmp/*"

II- Method 2 : using TWRP and Magisk.zip (External SDCARD or USB OTG cable needed)

1. reboot int bootloader mode : adb reboot bootloader

2. unzip and flash the the attached TWRP recovery : fastboot flash recovery recovery_maze_alpha_4G_twrp-321.img

3. In TWRP choose first "change language" then press the "cancel" button while asking you for decryption password for data

4. In your PC download the Magisk-v15.3.zip and put it in a USB key, or an SDCARD

5. Use an usb otg cable to connect the USB key to your phone running TWRP and install the Magisk-v14.zip from Usb-otg (or SDCARD)

6. bonus: do a complete backup of your phone : all partitions except cache and data to your Usb-otg (or SDCARD)

7. reboot and install the MagiskManager apk v14

III- Method 3 : using the phhusson modified boot image

1- flash the attached boot image, using fasboot (fastboot flash boot boot-super-bootimg-output-su-eng-r318.img) or SPFlashTools using the attached scatter, if you do not want to unlock your bootloader

2- reboot to Android then install from google play the phhsusson superuser

3- Voila :)

Important Notes:

1- In all case you can use SPFlashTools to flash boot image without unlocking bootloader.

2- windows SPFlashTools users : phone off, press VOL+ and connect it to your PC (running SPFlashTool and waiting for phone connetion)

3- linux SPFlashTools users : phone off and connected to PC , press VOL+ and POWER while your PC is running SPFlashTool (with sudo) and waiting for phone connetion.

Some useful tips

1- manual install of busybox :

a- root you phone with method II if not already done

b- stay in TWRP (or boot TWRP as in method II) then in advance->sideload slide the slider to confirm and after cancel that (we will not sideloading any thing, just to activate adb)

c- unzip and copy the attached busybox : adb push busybox /external_sd/

d- mount the system partition with the TWRP mount button

e- copy the busybox binary to /system/xbin : adb shell --> cp /external_sd/busybox /system/xbin/

f- make executable busybox and create links (the point at the end is a part of the command) : cd /system/xbin/; chmod 755 busybox; ./busybox --install -s .

g- umount the system partition in TWRP and reboot

2- manually install the OTA update.zip :

a- Google and download those 3 tools BlockImageUpdate, simg2img and img2simg.

b- In a terminal of your Linux PC do :

simg2img system.img system.raw.img # convert the sparse image to a normal raw (ext4) image
BlockImageUpdate system.raw.img system.transfer.list system.new.dat system.patch.dat # patch the newly created raw image
img2simg system.raw.img system.img # convert the patched raw image to a flashable sparse image

- system.img: you old system image (from 20170816 official rom)

- system.transfer.list, system.new.dat and system.patch.dat : inside the OTA update.zip

c- After that the original system.img will be patched and you will have an updated system.img.

d- Flash this patched system.img and also all .bin and .img files inside the update.zip (just replace old ones in the original 20170816 rom by those) and you will have the new official rom :)

3- Using supersu as root manager :

The last update at this time of supersu zip (2.82 SR5) works well, even it cannot update the su binary.

Credits to Magisk Devs, Phhusson and Jemmini