Ls: cannot access '/usr/share/applications/desktop.*.cache': No such file or directory Teletalk_3G/usr/share/pixmaps/Teletalk_3G.png Teletalk_3G/usr/share/applications/Teletalk_3G.desktop delete /etc/udev/rules.d/7-zte-mutil_port_les ok. zr: error while loading shared libraries: libusb-0.1.so.4: cannot open shared object file: No such file or directory The following operations occurs and throws a lots of error.start install. i have tried this guide with no luck, also tried sakis3g approach, that also stops with error. I was attempting to install my Teletalk 3g flash Modem in my Ubuntu 16.04 LTS 64 bits system.