A multi-mode mobile station comprising 1) reconfigurable transceiver
circuitry for communicating with wireless networks operating under
different air interface standards; 2) a memory for storing at least a
download configuration file and a home configuration file; and 3) a main
controller for configuring the reconfigurable transceiver circuitry to
operate according to a home network wireless standard using home
configuration data retrieved from the home configuration file. If the
main controller determines that a network operating according to the home
network wireless standard cannot be found, the main controller is further
capable of configuring the reconfigurable transceiver circuitry to
operate according to a download channel wireless standard using download
configuration data retrieved from the download configuration file. The
main controller then establishes a download channel with a local roaming
wireless network and downloads a roaming network configuration file from
the roaming wireless network over the download channel.