imei changing is illegal only try to repair original imei of handset.
use this tutorial at your own risk
things that u need
1. spt box.
2. firmware xxalf2 file from spt support as i tested it.
3. root file from support no need to download root v2 file u have to need only root file it is 102 mb in size.
process :
use download mode for flashing
1. first flash ur hand set with xxalf2 file with odin or spt box.
2. now flash ur handset with root file both csc and pda file.
3. now use samsung uart cable power on ur handset choose spt box com port in setting .
4. fill original imei mentioned on the back side of handside behind battery.
5. tick unlock .
6. press factory mode.
process completed.
