Disclosed are a system and methods for associating a “generic” wireless device, i.e., a device that is not pre-programmed with subscription credentials corresponding to a particular operator, with a Home Operator designated by the device's owner. The disclosed system and methods further facilitate the automatic linking of a newly activated M2M device to an appropriate server for downloading the subscription credentials for the Home Operator. The disclosed system includes a registration server for maintaining electronic registration data for a plurality of wireless devices and for directing newly activated wireless devices to a server for downloading “permanent” subscription credentials, such as a downloadable USIM. The disclosed system further includes a subscription server for updating registration server entries to reflect an association between a first wireless device and its corresponding home network. In some embodiments, the subscription server may be further configured for downloading subscription credentials to subscribing wireless devices.