USB_ModeSwitch

Hello All,
I want to connect huawei E173s-6 Dongle to My Board(Based on Cavium Processor), Linux 3.4.56
When This modem is connected it can not switch to modem mode from mass storage using usb_modeswitch_dispather utility but when I give command like "usb_modeswitch -I -c 12d1 -p 1c0b -c /etc/usb_modeswitch.d/12d1:1c0b" then it is converted to mass storage.
But other type of dongle works properly.
In Script if I replace usb_modeswithc_dispather --switch mode line with "usb_modeswitch -I -c 12d1 -p 1c0b -c /etc/usb_modeswitch.d/12d1:1c0b" then also it works fine.
So what may be the issue.

Thanks in Advance
Chirag Patwari

Please specify in detail which Linux distribution you are running, and if you are using the usb-modeswitch package from that distribution.

Also, take back all your modifications and enable logging in usb-modeswitch (edit /etc/usb_modeswitch.conf).