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how to unlock i9000
download patch file from z3x server.(I9000_XXJPK_modem_patched)
1st write patch file in phone area (select patch file as it is in ".tar" file dont extract it )
put phone in download mode by pressing
press and hold Volume Down + Home + Power Button

than press update firmware

after flash

turn on phone and turn on usb debugging (setting -> development -> usb debugging)

put ur phone IMEI in imei area
than click unlock sp
wait
than u can see net code ..

now insert card and *#7465625#
and check which lock is OFF.....