E5373S-155 unlock problem

[fazargsm]

E5373S-155 unlock problem, first i try with came firmware its fail then flash
E5373s-155_21.296.03.01.1133
E5373_17.100.03.00.1133
but still fail

DC - Unlocker 2 Client 1.00.1403

Detecting modem :

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

Found Applications port COM87

Found modem : E5373s-155
Model : Huawei E5373
IMEI : 865103023602*****
Serial NR. : X6QDW1573100***
Firmware : 21.298.01.01.397
Compile date / time : Dec 27 2014 13:41:33
Hardware ver. : CL2E5377SM02
Dashboard version : WEBUI_17.100.05.02.397
SIM Lock status : Locked (Card lock)
Wrong codes entered : 1 (unlock attempts left : 9)

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

Unlocking, please wait ...

AT command error

Error code 37

unlock failed !



]DC - Unlocker 2 Client 1.00.1403

Detecting modem :

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

Found Applications port COM85

Found modem : E5373s-155
Model : Huawei E5373
IMEI : 865103023602978****
Firmware : 21.296.03.01.1133
Compile date / time : Sep 9 2014 15:26:03
Hardware ver. : CL2E5377SM02
Dashboard version : WEBUI_17.100.03.00.1133_V7R2
SIM Lock status : Locked (Card lock)
Wrong codes entered : 2 (unlock attempts left : 8)

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

Unlocking, please wait ...

AT command error

Error code 37

unlock failed !

[Valdemaras]

Yes, not possible to unlock it sadly.