huwaie p6 unlocking problem,log is inside

here is log ,huwaie p6 iam facing this error.

[28/06/2016 10:01:12] GBKey Huawei Pack4 1.19
Detecting…
Detected : (HiSilicon) Android Adapter PCUI (COM75)
Reading Info…
Connecting…
Connected to server Ok
Checking GBKey…
GBKey Ok
Requesting Info…
Error Usb to CP !!!
Unlock Failed !!!
Finished.