Unlock / RESET huawei E3131 ( Hisilicon)

hi everyone!!!

i need your help to unlock my modem huawei e3131-s1Ew ( hisilicon )

- i update/ ugrade firmware but , i have a error !
- dc unlocker can't unlock it,

DC - Unlocker 2 Client 1.00.1233

Detecting modem :

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

Found Applications port COM19
Found Diagnostics port COM20

Found modem : E3131
Model : Huawei E3131
IMEI : 8643***********
Serial NR. : N8SBY14430000631
Firmware : 21.158.77.00.187
Compile date / time : Nov 5 2013 15:03:58
Hardware ver. : CH2E303SM
Dashboard version : UTPS23.001.07.04.910_MAC23.001.07.04.910
Chipset : HiSilicon
Voice feature : enabled
SIM Lock status : Locked (CardLock)
Wrong codes entered : 10 (unlock attempts left : 0)

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

Unlocking, please wait ...

Sorry, this modem can not be unlocked !

Error code 44

Wrong unlock code was entered 10 times !

unlock failed !

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Unlock / RESET huawei E3131 ( Hisilicon)