[SHIJILFONOTLY]

Selected model: I9100
Selected port:
Selected port speed: 115200
Reading phone info...
Model: GT-I9100
Android version: 4.1.2
Product code: GT-I9100LKANEE
Phone version: I9100XXLS8
PDA version: I9100XWLSJ
CSC version: I9100OXXLS7
IMEI: Unknown
Checking Super user right... false
Rooting phone, please wait... error
Done with Samsung Tool v.14.3

1)HOW TO UNLOCK 4.1.2(jelly bean)PHONE?
ANSWER)FIRST DOWNGRADE THE PHONE 4.0.4(Ice Cream Sandwich)
2)HOW TO DOWNGRADE 4.1.2 TO 4.0.4
ANSWER)DOWNLOAD THE PIT FILE&FLASH ROM I9100_u1_02_20110310_emmc_EXT4.pit
I9100XWLPW_I9100ODDLPC_INU
THEN FLASH THE DEVICE
AFTER THE FLASH PHONE TRUN ON WAIT SOME MINUTES
WAIT LONG TIME
THEN NO MORE TIME WAIT
REMOVE THE BATTERY AFTER 1 MINUTES REINSERT PUT THE RECOVERY MODE(VOL+&HOME BUTTON&POWER BUTTON) THEN WIPE FACTORY RESET
AFTER RESET PHONE IS ALIVE
ENABLE DEBUG MODE CONNEECT USB THEN UNLOCK

Selected model: I9100
Selected port:
Selected port speed: 115200
Reading phone info...
Model: GT-I9100
Android version: 4.0.4
Product code: GT-I9100LKANEE
Phone version: I9100DDLPB
PDA version: I9100XWLPW
CSC version: I9100ODDLPC
IMEI: Unknown
Checking Super user right... false
Rooting phone, please wait...
Checking Super user right... true
Reading data from phone... OK
Unlocking... OK
Rebooting phone... OK
Unlock done
Done with Samsung Tool v.14.3

NOTES,
i9100 4.1.2(jelly bean) MANNUL ROOT METHODE KILLED YOUR PHONE
AFTER ROOT PHONE IS BRICKSTHATS WHY I TRY THIS METHODE