U8300 unlock problem

[unibox]

I cant unlock U8300

DC - Unlocker 2 Client 1.00.0949

Detecting phone :

selection :
manufacturer - Huawei phones
model - Auto detect (recommended)

Found Phone : U8300
Model : Huawei U8300/Juni
IMEI : 352397040xxxxx
Firmware : M7x25V100R001C00B271

================================================== =================

Unlocking, please wait ...

Preparing Boot Download mode ...
unknown responce!

Error code 36


unlock failed !

Need urgent help

[unibox]

DC - Unlocker 2 Client 1.00.0949

Detecting phone :

selection :
manufacturer - Huawei phones
model - Auto detect (recommended)

Found Phone : U8300
Model : Huawei U8300/Juni
IMEI : 352397040xxxxxx
Firmware : M7x25V100R001C00B271

================================================== =================

Unlocking, please wait ...

Preparing Boot Download mode ... OK
Waiting modem/phone to be ready ...
Error code 129


unlock failed !

[unibox]

I dont know how, but after many attemp phone unlocked:

DC - Unlocker 2 Client 1.00.0764

Detecting phone :

selection :
manufacturer - Huawei phones
model - Auto detect (recommended)

Found Phone : U8300
Model : Huawei U8300
IMEI : 352397040xxxxx
Firmware : M7x25V100R001C00B271

================================================== =================

Unlocking, please wait ...

Preparing Boot Download mode ... OK
Waiting modem/phone to be ready ... OK

Phone successfully unlocked !

Credits left : 43

Please unplug and restart phone !

I installed older version