SAMSUNG S4 GT-I9515 4.4.2/i9301i S3 Neo 4.4.2 UNLOCKED
[imei change(free)]
Procedure
Phone must be rooted
Turn on phone
Go to setting developer option
ennable usb debugging
Go to dial window,type
*#0808# select.DM+MODEM+ADB
Connect phone to pc,install drivers if needed.
In Z3X software (check skip backup restore NVM
Tick wife EFS
Last write CERT and wait writting complete
s4 screenshot
root file and certificate download
for reference PO....used @ your own risk
...proven tested naman BY ME: ALSO credits po sa mga file na kung saan galing