1 . Download Halabtech Tool V1.1 2 . Turn off Virus Security. 3 . Extract the file , install it and run it. 4 . Choose Mtk One Click 5 . Select on Format Userdata 6 . Turn off the phone , and then hold volume up and down together. 7 . Plug the USB in and wait for the process done.
Fixing all kinds of phones.