SGH-t559N unlocked done..[Reference]
first root the phone using CydiaImpactor
usb debug enable
type *#7284#
uart to pda - usb to pad
1. open samsung tool latest version
2. select correct model T599n
3. read info
4. direct unlock...
just follow instruction..
Selected model: T599N
Selected port: COM3 Z3X BOX Serial Port
Selected port speed: 115200
Reading phone info...
Model: SGH-T599N
Android version: 4.1.2
Product code: SGH2T599EAATMB
Phone version: T599NUVAMD4
PDA version: T599NUVAMD4
CSC version: T599NTMBAMD4
IMEI: 356433054867075
Phone S/N: R21DA17M53Y
Checking Super user right... true
Reading data from phone... OK
Now connect phone to UART cable
Checking phone at COM3 OK
Bypass MSL... OK
Unlocking... OK
Unlock done
Codes set to 00000000
Done with Samsung Tool v.16.3
Done with Samsung Tool v.16.3
first root the phone using CydiaImpactor
usb debug enable
type *#7284#
uart to pda - usb to pad
1. open samsung tool latest version
2. select correct model T599n
3. read info
4. direct unlock...
just follow instruction..
Selected model: T599N
Selected port: COM3 Z3X BOX Serial Port
Selected port speed: 115200
Reading phone info...
Model: SGH-T599N
Android version: 4.1.2
Product code: SGH2T599EAATMB
Phone version: T599NUVAMD4
PDA version: T599NUVAMD4
CSC version: T599NTMBAMD4
IMEI: 356433054867075
Phone S/N: R21DA17M53Y
Checking Super user right... true
Reading data from phone... OK
Now connect phone to UART cable
Checking phone at COM3 OK
Bypass MSL... OK
Unlocking... OK
Unlock done
Codes set to 00000000
Done with Samsung Tool v.16.3
Done with Samsung Tool v.16.3