S4 i337m IMEI Repair Problem

[A4L]

I was unlocking this phone when it stopped at Bypass MSL. After waiting for like 20 minutes I cancelled it.

Selected model: I337M
Selected port: COM39 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SGH-I337M
Android version: 4.4.2
Product code: SGH-I337ZWAVMC
Phone version: I337MVLUFNE1
PDA version: I337MVLUFNE1
CSC version: I337MOYAFNE2
IMEI: 359367xxxxxxxxx
Phone S/N: RV1Dxxxxxx
Checking Super user right... true
Backuping MMCBLK... OK
Writing data to phone... OK
Rebooting phone... OK
Waiting phone... OK
Bypass MSL...

Then tried unlock again. It went through this time but the IMEI had been corrupted.

Selected model: I337M
Selected port: COM39 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: SGH-I337M
Android version: 4.4.2
Product code: Not Active
Phone version: I337MVLUFNE1
PDA version: I337MVLUFNE1
CSC version: I337MOYAFNE2
IMEI: Unknown
Phone S/N: RV1Dxxxxx
Checking Super user right... true
Backuping MMCBLK... OK
Writing data to phone... OK
Rebooting phone... OK
Waiting phone... OK
Bypass MSL... OK
Unlocking... OK
Reseting... OK
Unlock done
Done with Samsung Tool v.17.8

After repairing the IMEI with both old and new it became all zeros. Tried many times but still the same. I've never had this issue before.

Selected model: I337M
Selected port: COM39 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Repairing IMEI... OK
Reseting... OK
Repair done
Done with Samsung Tool v.17.8

Selected model: I337M
Selected port: COM39 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: SGH-I337M
Android version: 4.4.2
Product code: Not Active
Phone version: I337MVLUFNE1
PDA version: I337MVLUFNE1
CSC version: I337MOYAFNE2
IMEI: 000000000000000
Phone S/N: RV1Dxxxxxxx
Checking Super user right... true
Backuping MMCBLK... OK
Writing data to phone... OK
Rebooting phone... OK
Waiting phone... OK
Bypass MSL... OK
Repairing... OK
Reseting... OK
Repair done
Done with Samsung Tool v.17.8

[rasgula]

Try to use z3x ver 16.9
Do repair efs first
Then repair imei/network .
Your problem will be solve
BR

[A4L]

Originally Posted by rasgula

Try to use z3x ver 16.9
Do repair efs first
Then repair imei/network .
Your problem will be solve
BR

I gave the phone back to the customer since it was somehow working but good to know for the future.

I wish z3x would come out with a more stable version. This whole rooting thing is a hassle. I know there are solutions without root.