I have a WZR-HP-AG300H with DD-WRT v24SP2-MULTI (06/03/12) std - build 19154 firmware. I've not been able to find any clear instructions for setting it up to use a Virgin Mobile 3G Novatel MC760 USB modem for an alternative or failover internet connection. There isn't anything specific in the router manual so I thought I'd post the question here and see if anyone can be of help.
Thanks
First thing Email support and Ask them if your Usb 3G modem is compatible or not?