Draytek Vigor2200 User Manual page 22

Step 1 - Upload ADSL modem firmware into router
The USB modem is designed in such a way that its own firmware
is loaded from the host device (PC or Vigor2200USB) every time
it is initialised or restarted.
You must upload the modem 's firmware into the
Vigor2200USB 's memory so that it 's available to the modem.
This only ever needs to be done once; the firmware is then stored
in the Vigor2200USB 's non-volatile memory.
From your Windows Start Button, run the USB Modem
Firmware utility :
Firstly, the utility will detect your modem type. Support for other
models will be added later; please check with your dealer. If you
have more than one USB modem installed, you may need to
select it in the list :
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