hi all ,anyone have try go back emui4.1 from AL10C00B562 is succesful ?before have try go bck 4.1 from AL10C00B552 to AL10C00B386 via dload is sucessful and very easy go bck .but now i on B562 need to go bck B386 via dload is unsucessful .i also dun know why unsuccesful