SECURE UPGRADE OF A MOBILE DEVICE WITH AN INDIVIDUAL UPGRADE SOFTWARE OVER THE AIR

摘要

The invention concerns a method for securely upgrading a mobile device with an individual upgrade software, the individual upgrade software remaining unusable by a mobile device as long as the individual upgrade software has not been activated. The method includes transmitting its unique identification number to the mobile device management apparatus; calculating a mobile device encryption identity and a management apparatus encryption identity; transmitting only the individual upgrade software and the calculated management apparatus encryption identity; the mobile device calculating an activation encryption identity and an activation decryption identity; comparing the calculated activation decryption identity to the activation encryption identity; and activating the individual upgrade software for use by the mobile device as a result of a positive comparison.