This is the stock firmware for HTM H9503 5.0 inch MTK6572W Dual Core Smartphone.
Download Link:Firmware for HTM H9503(“SP_MDT_exe_v3” is the flash tool)
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.