Huawei E303 canot unlocked

[wiw.master]

i have modem Huawei E303 - unlock done on dc-unlocker but modem still locked... when modem read again by dc-unlocker it say modem Locked (CardLock)
modem still locked.

here is the logs:

DC - Unlocker 2 Client 1.00.1034

Detecting modem :

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

Found modem : E173z-1
Model : Huawei E303
IMEI : 868988013504961
Serial NR. : U9C7SA92C0513456
Firmware : 21.157.71.00.94
Compile date / time : Apr 19 2012 14:52:36
Hardware ver. : CH2E303SM
Dashboard version : UTPS23.006.02.04.94_MAC23.006.02.03.94_LNX23.006.0 2.03.94
Chipset : HiSilicon
Voice feature : enabled
SIM Lock status : Locked (CardLock)
Wrong codes entered : 0 (unlock attempts left : 10)

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


Unlocking, please wait ...

Modem successfully unlocked !

Credits left : 28

[Valdemaras]

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 we do not have solution to this problem.