Prior to XMobile Manager, upgrading mobile units in the field required an onsite visit from Mentor Engineering's engineers or the hiring of a radio shop to program each unit individually. Considering that some clients own over 500 mobile units, this was an expensive and time-consuming task. In addition, clients were expected to keep manual records of the software programs and operating systems contained in each mobile device. These records were often misplaced or incomplete. Created in response to these issues, XMM brings with it many benefits. XMM can improve the tracking and programming of mobile units. It automatically documents the operating system version of each unit, and gives clients the ability to add or update mobile unit programs from the office within minutes. Plus, historical data including the status of every unit update is at the client's fingertips.