Whatever method you choose, be sure to create regular backups of your Android device. This will ensure that you can always restore your device to a working state, even if you experience a major software problem.
Still, you can check this XDA thread for the latest links. You might want to revert your phone to stock Android for many reasons.
This guide will show you how to install TWRP on your device without using a PC. This step involves talking a Backup of the whole phone including System OS, Boot files, Modem and Data Files. In simple words, Custom Rom means installing an Android OS on your phone that is compatible with your device with the purpose of enabling heavy customization. It can be done by flashing the device and storing a Custom ROM (OS) on the SD card then installing it using TWRP Recovery.
Now, close the SP Flash tool and unplug your smartphone. The flashing process will start stock ROM (firmware) momentarily, and it’ll get accomplished in a minute or two. Now click on the Download button to start the flashing process. B. We use the Sp flash tool for as Doogee Y6 Flash Tool because of this tool is very efficient and support all kind of MTK phones.
This way, you can easily backup all your phone’s internal storage data to your pc. As this backup is stored on your computer, you can restore it any time by connecting your device and copy-paste the backup files.