The manual gadget

SAMSUNG I5503 UNLOCK
STATUS LOCK PO SA NETWORK SUN CELLULAR
TOOLS MICRO USB CABLE OR NOKIA 5130C CABLE

PROCEDURE

PROCEDURE-FOLLOW THIS
1: start without sim and type *#7284#
select usb
2: restart your phone
3: go to setting > application > development > select USB debugging
4: connect usb cable then select KIES mode
5: open Z3X Samsung 3G SELECT I5503
and select SUMSANG android USB Diagnostic serial port on COM port
then just click UNLOCK SP