huawei e1550. i unlocked it but

[harshpahwa]

huawei e1550. i unlocked it but when i use it . after one or two minute pin blocked occure.why this is happning.urgent need of solution

[Vincentas]

What provider and country? Could you copy here what is detected by dc-unlocker?

[harshpahwa]

here is information

detected by dc;

Detecting card :

selection :
manufacturer - Huawei modems
model - Huawei E1550 (IDEA)

Found modem : E1550
Model : Huawei E1550 (IDEA)
IMEI : 352965041632116
Serial NR. : B55TAA1041703699
Firmware : 11.608.14.00.356
Compile date / time : Dec 18 2009 13:07:35
Dashboard version : UTPS16.001.06.01.356_MAC15.001.07.02.356_LNX15.001 .07.03.356
Chipset : Qualcomm MSM6246
NAND Flash : hynix_128M_32M
Voice feature : enabled
SIM Lock status : unlocked
Wrong codes entered : 0 (unlock attempts left : 10)
and i m now using bsnl india

[Vincentas]

detected by dc;

Detecting card :

selection :
manufacturer - Huawei modems
model - Huawei E1550 (IDEA)

Found modem : E1550
Model : Huawei E1550 (IDEA)
IMEI : 352965041632116
Serial NR. : B55TAA1041703699
Firmware : 11.608.14.00.356
Compile date / time : Dec 18 2009 13:07:35
Dashboard version : UTPS16.001.06.01.356_MAC15.001.07.02.356_LNX15.001 .07.03.356
Chipset : Qualcomm MSM6246
NAND Flash : hynix_128M_32M
Voice feature : enabled
SIM Lock status : unlocked
Wrong codes entered : 0 (unlock attempts left : 10)
and i m now using bsnl india

Need to update firmware. Firmware file you can find in this forum: http://www.dc-unlocker.com/forum/showthread.php?t=1739