[Miscellaneous Android Development] Andys4c:
Translated via google translate:

!!!Warning!!

This will void the warranty, delete data from the phone, and may brick.

screenshot that the tutorial works: https://postimg.cc/v1khDqNy

What we will need: ADB AND FASTBOOT - everything will be contained in one folder (except for the USB cable and the computer

SP FLASHTOOL

USB CABLE

PC With Windows

Magical

-Preparation

Download all files from the link: https://mega.nz/folder/WxZW1R5L#wiBRGGIDCDmHFuZ_s0ROvw

We extract ZIP Aligator S4090 ....

We extract SP_FLASHTOOL.ZIP

We extract ADB.ZIP

-How to do it

Open the Phone settings and go down, click on "PHONE INFORMATION".

Then go down and click on "ABOUT PHONE". Now your phone information will open. Here we go down and click on the build number before it appears enter the password (if you do not have any then it will not be displayed) and as soon as you enter it will show "VOILÁ, I became a developer. Then click on the back arrow and return to the menu where You will now see the "For Developers" option, click it and turn it off and on "Unlock OEM" (this is important) After turning it on, a pop-up window will appear where you can click Continue, then turn on USB debugging. Open the extracted ADB on the PC and click on INSTALLER, then put Y on each option. After installation, click on START (Windows icon) and type "CMD" in the search and press Enter. Unlock the mobile phone and connect it to the PC. reboot bootloader "and a pop-up window will appear on the phone with" OK ". Now the phone will reboot and type" Fastboot Mode ". Type" fastboot oem unlock "in the command line and a long text will appear on the phone. we will wait until "FASTBOOT RECOVERY REBOOT" appears on the Mobile and type "FASTBOOT REBOOT" in the command line. Let's wait for the phone to start up and turn it off. Now open the Extracted SP FLASHTOOL and click on the .exe file flashtool with the Android icon. Now click on the Folder Icon next to the scatter sign and go to the extracted Aligator folder .... and select the only file that will be displayed. Wait and a list of items to upload will appear below, deselect the preloader item (otherwise it would be a hardbrick) and start Start Download. Now connect the phone in the switched off state with a cable and wait until "Download OK" appears on the screen. Disconnect the cable and start + set up the phone. We will now install the Magisk.apk application. Open it and click on the three dots, where you select the settings. Click on the update channel and select CUSTOM. Next, click on the update url and copy this url: https://raw.githubusercontent.com/topjo ... table.json

Now we turn off the phone again and open SP FLASHTOOL, load the scatter and deselect everything except "BOOT" Click on the file address next to boot and find the file MAGISK_ALIGATORS4090.IMG. click on Start Download. When done, we turn on the phone and have ROOT: D

for whatever thumbs up I'll be happy, this tutorial took me less than a month of extracting, scripting, and creating Scatter.

Acknowledgments: Vipul for the extraction script, Hovatekk for the help with the magisk, MTK-SU for the help and finally Tech Fiber for the help as well. Thanks guys, it wouldn't be possible without you