Haier E13 MT6750 Android 8.0 Oreo Firmware

Extract And Run SP flash tool.
Install MTK android USB drivers.
Then download Firmware file/Flash file/Rom for your phone from below.
switch off your mobile remove the battery (if removable) reinsert the battery and plug the USB cable in charging socket.
Now open SP flash tool.exe.
When SP flash tool open, go to download button in SP flash tool.
In download tab, click on scatter load button.
After locating the scatter tab, click on the download button.
Now connect your smartphone with a USB cable and press volume up or volume down key for easy detection (remove and reinsert your phone battery if it is removable)
When flashing is completed, a green ring will appear in SP flash tool.
Close SP flash tool on your computer and unplug the phone.
Power on the phone and enjoy.
After the flashing process starts, it might take up to 5–10 minutes. So keep patience and wait.