[B]Installing usb_modeswitch from source code: [/B] The latest version now is 1.4.4 for usb_modeswitch & the latest data package released 2010-08-26 , so check usb_modeswitch website for the latest release.
1- Install dependencies:
sudo aptitude install libusb-dev
wget http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-1.1.4.tar.bz2
tar -xvf usb-modeswitch-1.1.4.tar.bz2
cd usb-modeswitch-1.1.4
sudo make install
wget http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-data-20100826.tar.bz2
tar -xvf usb-modeswitch-data-20100826.tar.bz2
cd usb-modeswitch-data-20100826
sudo gedit Makefile
UDEVDIR = $(DESTDIR)/lib/udev
UDEVDIR = $(DESTDIR)/etc/udev
sudo make files-install