i747 unknown baseband imei null please help

please help to my problem in samsung s3 i474

i flash via cwm to the same build no. and rooted firmware, before i flash wich is i747UCUFNJ2

but after flash i got imei null and unknown basband

i try to repair to z3x box but i got this error

old version: bypass msl error

z3x pro, AT RIL error

any one please gave me a efs for i747UCUFNJ2 or modem

thanks in advance