The present invention includes a system and methods for upgrading software on a mobile terminal. The system includes a network management computer (NMC) adapted to receive a plurality of software upgrades and to transmit one of the plurality of software upgrades to one of a plurality of mobile terminals through a satellite link. The mobile terminal can include an upgradeable component, which in turn includes a detachable device descriptor (DDD) corresponding to operating characteristics of the upgradeable component. According to the present invention, the NMC is adapted to transmit the one of a plurality of software upgrades to the mobile terminal in response to the DDD of the upgradeable component. Methods employing similar features and advantages are also disclosed herein.