i8200n unlocked,but not accept 00000000

please help me why is not accept unlock code 00000000:

Quote:

Operation: Unlock
Selected model: GT-I8200N
Software version: 26.3

Waiting ADB device… OK
Reading phone info…
Model: GT-I8200N
Android version: 4.2.2
Product code: GT-I8200MBNVOD
Phone version: I8200NXXUANC1
PDA version: I8200NXXUANC1
CSC version: I8200NVFGANB2
CSC country code: UK
CSC sales code: VOD
HW version: MP 0.300
Phone S/N: R21F70W853P
Modem board: PXA986
RF cal date: 20140707
IMEI: 359919054647910
Checking Super user right… true
Bypass MSL… OK
Unlocking… OK
Rebooting phone… OK
Unlock done

Done with Samsung Tool PRO v.26.3