[iSKA SERViCE]

Вроде Z3x испроавляется с ним.

Sir you just have to root the phone and make a efs repair and that will unlock your phone, I already tested with all S3 4.3 (T999, T999L,i747 and i747M).

-------------------------- 13-1-2014_16-57-56 --------------------------
Selected model: T999 DONE WITH USB CABLE
Selected port: COM53 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SGH-T999
Android version: 4.3
Product code: SGH-T999RWATMB
Phone version: T999UVUEMJC
PDA version: T999UVUEMJC
CSC version: T999TMBEMJC
IMEI: 353022057164003
Phone S/N: R21C97TRJLR
Checking Super user right... true
Writing data to phone... OK
Rebooting phone... OK
Done with Samsung Tool v.16.8


And IMEI REPAIR with UART CABLE
Selected model: T999
Selected port: COM3 USB Serial Port
Selected port speed: 115200
Checking phone at COM3
Repairing IMEI... OK
Reseting... OK
Repair done

Odin 3.07

CF-Auto-Root-d2tmo-d2tmo-sght999.zip