huawei u2800a at&t unlock failed

[nisamkannur]

hallo supporter, i have u2800a at&t but alwayes error unlock
DC - Unlocker 2 Client 1.00.0890

Detecting phone :

selection :
manufacturer - Huawei phones
model - Huawei U2800/U2801

Found Phone : U2800A
Model : Huawei U2800/U2801
IMEI : 356631045087774
Firmware : U2800ACBXB119

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

Unlocking, please wait ...

Preparing Boot Download mode ...
No response !

Error code 21


unlock failed !


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

Unlocking, please wait ...

Preparing Boot Download mode ...
No response !

Error code 21


unlock failed !


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

Unlocking, please wait ...

Preparing Boot Download mode ...
No response !

Error code 21


unlock failed !

[Vincentas]

Try to restart phone and repeat unlock.
Try to detect phone by autodetect.
Be sure phone software is closed.

[nisamkannur]

Try to restart phone and repeat unlock.
Try to detect phone by autodetect.
Be sure phone software is closed.

thanx, unlocked.