Follow the instructions to install a stock rom on android MediaTek (MTK) devices using the Smartphone Flash Tool (SP Flash Tool) on the Windows Operating System.
Your MediaTek Smartphone/Tablet must have more than 40% charging before flashing the Stock Rom.
How to Flash Stock Rom on Android MTK Devices Using SP Flash Tool
STEP 2: Power off your smartphone and remove the battery (If the battery is removable).
STEP 3: Download the stock Rom or Custom Rom for your android smartphone/tablet on your computer and extract it in a folder.
STEP 4: Download the SP Flash Tool on your computer and extract it in a folder. Find flash_tool.exe and run it.
STEP 5: Once SP Flash Tool is opened click on the download button.
STEP 6: under downloading mode click on the scatter-loading button.
STEP 7: Select Android Scatter.Txt file from the already downloaded/extracted files of stock rom.
STEP 8: Now, click on the download button to start the Flashing process.
STEP 9: Finally, Connect your smartphone to PC by USB Cable without battery (if the battery is removable). Press Volume Up or Volume Down key, so that PC can detect your smartphone easily.
STEP 10: Once the flashing process completed. You will see the green ring with an Ok sign.
STEP 11: Close the Smartphone Flash Tool (SP Flash Tool) and disconnect your phone from computer.
STEP 12: Power on your smartphone/tablet and enjoy!
Congratulations, Now your Android Smartphone is successfully running the Stock Rom you have Downloaded.
Thanks at all. If you have any query regarding the method may ask in comments.