[Android Q&A, Help & Troubleshooting] Raiyan Rabbi Tasin:
Ported Twrp 3.0.2

Hi Friends!!!!

First download Helio S20 rom from this link or other : https://drive.google.com/file/d/0BywTv6KKZO4jX3BMMGRGVUFRa28/view

Recovery.img link : http://www26.zippyshare.com/v/3vAjy5kS/file.html

After download Extract the rom and copy scatter file from there and paste into a new folder

AND EXTRACT THE RECOVERY ZIP AND PASTE INTO the new folder

.................First you should try recovery.img from Original folder,if you get bootloop or storage problem then try recovery.img from Fixed folder

You should install mediatek preloader driver

After downlaod sp flash tool from there: http://spflashtools.com/windows/sp-flash-tool-v5-1640

and extract the sp flash tool and select scatter file from the new folder

and choose recovery from the new folder

(you should check recovery box on sp flash tool,if you see uncheck)

After hit download and connect helio s20 in preloader mode

After flah recovery.img if you success to boot in to Twrp then flash this zip : https://download.chainfire.eu/921/SuperSU/UPDATE-SuperSU-v2.65-20151226141550.zip?retrieve_file=1

You can try other version

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Don't forget this to do in recovery :::: CAUTION (AVOID BOOT LOOP):

Once you select Swipe to Allow Modifications, it modifies your system partition. If you don't flash the root file after that, your phone will suffer boot loop. The original boot image checks if something was changed in the system and it keeps on looking for the original file. Hence, the endless waiting aka boot loop. So you must then flash the SU zip file in order to patch the boot image.

The SU file we'll be using for this guide allows you to do a 'systemless' root. If you want to install future updates for your phone while rooted, you should mount the system partition as read-only. Changing anything inside the system partition will cause you to fail to flash official OTA files.

Mean after flashing twrp, direct flash supersu zip

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after flash reboot system

Search in youtube :

How to flash supersu zip

How to install preloader driver

How to flash recovery.img using sp flash tool

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First try orginal folder's recovery because only ueventd.rc & ueventd.ranchu & kernal replaced

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And in Fixed folder's recovery fstb,fstb.ranchu and other different things deleted and fstb & ueventd.rc & ueventd.ranchu & and also kernal replaced

----------------------------------------------777---------------------------

::::::::::::::::::::::::::TWRP 3.0.2 PORTED FROM UMI SUPER::::::::::::::::::::

::::::::::::::::::::::::::MT6755 BASED 3.18.22+ KERNAL.........:::::::::::::::::::

:::::::::::::::::::::::::::::Android Marshmallow Recovery::::::::::::::::::::::::::

:::::::NOT TESTED CAN BE PORT FOR MT6755 MARSHMALLOW KERNAL::::::::::::

If this working reply please,if it is not working then try this and compile twrp :::::::

1) http://xdaforums.com/showthread.php?p=32965365#post32965365

2) http://xdaforums.com/showpost.php?p=65482905&postcount=1471