samsung n7100 imei null solution

How to repair efs with out box nd repair imei using z3x check below. 1)if yur mobile is null 1st download tis file N7100_repair_efs by james jerss.rar. 2) Put yur mobile into download mode nd run odin select the n7100 repair efs file into PDA nd flash it. aftr tat yur mob still has imei null factory reset nd check or update vit official firmware 4. spesifikasi samsung galaxy a12