In a few steps, you need to do this:
sudo apt-get install libusb-dev
wget http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-1.1.0.tar.bz2
sudo tar xjvf usb-modeswitch-1.1.0.tar.bz2
cd usb-modeswitch-1.1.0/
make clean
make
make install
If you prefer, it is possible to install the deb package of usb_modeswitch :
wget https://forge.betavine./frs/download.php/490/usb-modeswitch_0.9.7_i386.deb
dpkg -i usb-modeswitch_0.9.7_i386.deb
edit the file /etc/usb_modeswitch.conf
vim /etc/usb_modeswitch.conf
and add this vendor to the file:
DefaultVendor= 0x12d1
DefaultProduct= 0x1446
TargetVendor = 0x12d1
TargetProduct= 0x1001
MessageContent="55534243000000000000000000000011060000000000000000000000000000"
MessageEndpoint=0x01
CheckSuccess=5
Create the following file in udev rules
vim /etc/udev/rules.d/15-huawei-e1750.rules
Copy the following text:SUBSYSTEM=="usb", SYSFS{idProduct}=="1446", SYSFS{idVendor}=="12d1", RUN+="/usr/sbin/usb_modeswitch"
restart service udev
With network-manager configure to use TMN/etc/init.d/udev restart