Samsung Galaxy Light Unlock done... 
Selected model: T399
Selected port: COM25 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Waiting ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SGH-T399N
Android version: 4.4.2
Product code: Unknown
Phone version: T399NUVUANH1
PDA version: T399NUVUANH1
CSC version: T399NTMBANH1
IMEI: 350695200123951
Phone S/N: RV8F90F432B
Checking Super user right... true
Reading modem... OK
Patching modem... OK
Writing modem... OK
Rebooting phone... OK
Done with Samsung Tool v.19.1