Problem unlocking E5577

[jimmytech]

Please i need your help .. i bought 7 credits to unlock my Huawei modem E5577Cs-321 but give me error :
Detecting modem :

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

Found Applications port COM4

Found modem : E5577Cs-321
Model : Huawei AuthVer 4 modem (New)
IMEI : 860783030898100
Serial NR. : D2L7N16311004682
Firmware : 21.329.63.00.397
Dashboard version : WEBUI_17.100.20.00.397_MRE5
Web UI version : WEBUI_17.100.20.00.397_MRE5
SIM Lock status : Locked (Card Lock)
Wrong codes entered : 7 (unlock attempts left : 3)

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Unlocking, please wait ...

AT command error

Error code 37

unlock failed !

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Any help?

[Valdemaras]

Hello, this error means that device not possible to unlock. If you want us to check for refund let us know your username.

[jimmytech]

Thanks a lot for your quick response, my username is : jimmytech