Restore Orginal imei s/n for Exynos devices Samsung

Must have root

1: install root explorer
Download Root Explorer 4.1.8
2: Open app and Give root permission
3: Open EFS folder
4: Delete All files and folder just leave FactoryApp and Prov_data Folders
5: Reboot Device to download mode
6: Flash Combination firmware

After apply this steps find latest firmware for device and flash with odin
Finally you have original imei and S/N
Enjoy ;)