Spreadtrum imei change 100%
1- open your softwre and connect box

2- go to spreadtrum

3- select port

4- read flash

5- select imei

6- enter new imei code

7- enter original imei (back of your fone)

8- select readed flash file

9- and click start

your dispay show it
analysis the file...
imei change complete, save as
your readed flash file ********

u have created imei file the name of new imei

10- select write flash

11- and write imei file

and after all your fone power on after few second so wait after power on