e5577c error unlock

[osama_mobile]

DC - Unlocker 2 Client 1.00.1403

Detecting modem :

selection :
manufacturer - Huawei modems
model - Huawei AuthVer 4 modem (New)

Selected Applications port COM365

Found modem : E5577Cs-321
Model : Huawei AuthVer 4 modem (New)
IMEI : 860783034264606
Serial NR. : D2LDU16606001868
Firmware : 21.316.01.00.1029
Dashboard version : WEBUI_17.100.13.02.1029_MRE5
Web UI version : WEBUI_17.100.13.02.1029_MRE5
SIM Lock status : Locked (Card Lock)
Wrong codes entered : 0 (unlock attempts left : 10)

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Unlocking, please wait ...

Waiting modem/phone to be ready ...
AT command error

Error code 37

unlock failed !

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any one help me plz

[Valdemaras]

Yes, it is not supported by DC-unlocker.

[osama_mobile]

dose it work with downgrade firmware?

[osama_mobile]

Yes, it is not supported by DC-unlocker.

dose it work with downgrade firmware?

[Valdemaras]

dose it work with downgrade firmware?

Maybe, depends with version of firmware.