Problem with EFS

[Rao Mustansar]

i have samsung galaxy s3 gt 19300 international version. i have backup of efs i have no network prblem,please tell me the procedure how to solve this problem without rooting the device.i restore my efs but this is not permanent solution because whenever i flash other roms after the flash i have to do again restore efs,is there any permanent solution to get rid of this problem,i dont want to do again n again restore,i want permanent solution of this problem.