j500f cert write done but

j500f write done but still imei not change or repair network why

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Waiting For Device… OK
Please Tap on ‘OK’ in ‘Allow Usb Debugging;’ Pop-up on Device Screen!
Device Status: [ONLINE]
Model : SM-J500F
Manufacturer : samsung
Serial No. : R000000000R
PDA Version : J500FXXU1AOG1
CSC Version : J500FOJV1AOG3
SW Version : J500FXXU1AOG1
Android Version : 5.1.1
Build ID : LMY48B
IMEI :
Sales/Country Code : XSG
Built Date : Fri Jul 10 16:43:33 KST 2015
Checking Root Permission… OK
Prepairing… OK
Writing AT Commander… OK..OK -> 9732197C5D9DDD80EFFF4EEFDB8A8F8EB276F748
Bypassing MSL… OK..OK..OK
Writing Certificate 1… OK..OK..OK..OK..OK..OK..OK..OK..OK..OK..OK..OK
Writing Certificate 2… OK..OK..OK..OK..OK..OK..OK..OK..OK..OK..OK
Cleaning Environment… OK
Rebooting … OK
Stopping ADB Service… OK

Operation Time: 00:05:25

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