Galaxy S3 sgh-i747m MSL… error

Trying to repair the IMEI on S3 (SGH-I747M).
I tried without rooting the phone first then I rooted the phone. I keep getting "MSL… error" message.
Am I missing something? Do I need to downgrade the firmware to 4.3?
Any help will be greatly appreciated.

Waiting ADB device… OK
Reading phone info…
Model: SGH-I747M
Android version: 4.4.2
Product code: SGH-I747MBBRWC
Phone version: I747MVLUFNF2
PDA version: I747MVLUFNF2
CSC version: I747MOYAFNF2
CSC country code: Canada
CSC sales code: RWC
HW version: REV0.4
Phone S/N: R21DB0B7FBA
Modem board: MSM8960
RF cal date: 2013.11.02
IMEI: 353************
Initialization AT RIL… OK
Bypass MSL… error
First reset MSL

Done with Samsung Tool PRO v.24.2

Reading phone info…
Reading IMEI… OK
IMEI: 353*********
Reseting MSL security… error
Done with Samsung Tool PRO v.24.2