What you will need:
1) ext4 unpacker
2) ext2explore
PART1
Extract both zip files.
Open ext4 unpacker folder and double click on ext4_unpacker.exe
Click as shown below
Select system.img
Click as shown below
Write any name as shown below
Click on Save and wait till below green processing bar disappears
Close ext4 unpacker
PART2
Now open ext2explore and double click on ext2explore.exe
Click on file then open image
Select the file you have created in PART1.
Click on open
Click as below
Click as below
Select the folder in which you want to extract your files,click
on OK and wait process to complete.
Close ext2explore
Now you have successfully extracted files from system.img in
your selected folder.
