I9500 Write IMEI failed

HELP OCTOPUS TEAM…:confused:
s4 after the turn mmc fix IMEI repair failed

LOG…..
———————————————————————————–
Platform: Samsung Android
Selected port: COM5
Selected model: GT-I9500
Detected phone model: GT-I9500
Firmware compiled date: Fri Feb 28 20:23:54 KST 2014
PDA version: I9500XXUFNB7
CSC version: I9500OLBFNB4
SW version: I9500DXUFNB2
Phone IMEI: 004999010640000
Android version: 4.4.2 (KOT49H)
Reading security backup, please wait…
Write IMEI failed

help step by step….octopus team
thx