i am not responsible for anything that happens to your device
Firstly Download the stock rom from the link given below-
Thanks to Android XDA
now install Ygdp from the downloaded stock rom
then open ygdp select config ->select the cpb file in the folder where u extracted the stock rom zip then press apply
then minimize the application ygdp and go to its install dirctory Open the folder YLXZGJ then open YGDP then open DownFiles then copy all the contents to a new folder . now you can close ygdp tool.
Now open sp flash tools then select the mt6582 scatter loading from the new folder made above , from the option select loading(scatter)
press the download button
now connect the phone without battery by pressing volume up buttom so that the pc can detect your device.
now the process will start and when it finishes a green ring will appear with the text download complete .
your device has been restored to stock .
Any questions plz go ahead and ask