USB_ModeSwitch

I have a Novatel U760 modem. At first, to get online with Linux with it, I used to go through a network bridge created using a Windows 7 Virtualbox guest. And later, I found out about usb-modeswitch, which eliminated the need to go through Windows to use the Internet. The problem now arises when trying to use the internet from within the virtual machine. How can I temporarily return the device to its default behavior, apart from removing usb-modeswitch?

You could try to reset the device with usb_modeswitch's -R parameter, but there is no guarantee that this will set it to storage mode again. It does not work for most devices.

The other way you could try is to use the serial ports of the switched device which should be visible in Windows as COM ports. You can use these in standard RAS network settings where you edit the modem init strings according to your access data.