modem E173z-1A Unable to unlock it ???

[Alkawa]

modem E173z-1A Unable to unlock it when we try the unlock it the modem show like unlock but when u plug it out and insert it show is locked

here the info using last update from Dc-unlocker :

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

Found modem : E173z-1A
Model : Huawei E173
IMEI : 868402005908636
Serial NR. : Q5CBYA9332608554
Firmware : 21.158.73.00.1043
Compile date / time : Mar 5 2013 11:31:53
Hardware ver. : CH2E303SM
Dashboard version : UTPS21.005.11.01.1043_MAC21.005.11.01.1043
Chipset : HiSilicon
Voice feature : disabled
SIM Lock status : Locked (CardLock)
Wrong codes entered : 10 (unlock attempts left : 0)
////////////////////////////////////////////////////////
Operator : MTN SUDAN

[Vincentas]

Unfortunately but this firmware that your device runs is not supported by dc-unlocker at the moment, maybe someday in future, no exact date. Currently there is no solution to this problem.