This is the stock firmware for HTM H9503 5.0 inch MTK6572W Dual Core Smartphone.
1.Open the flash tool in the package.
2.Choose files by button”Scatter file”. You should choose the file named”MT6572_Android_scatter.txt” here.
3.Click “Start all”.
4.Connect the phone with your PC,wait for several minutes.
If it does not work,please try to take off the battery before connect PC and try again.