Method to Reduce Vehicle Downtime While Performing OTA I Software Updates

摘要

This invention provides capabilities beyond the traditional target ECU Software update by adding the ability to deliver an update package to a background programmable target ECU from a central programming master while the target ECU is operating normally. The programming master: 1. Downloads and verifies the authenticity and integrity of the update. 2. Securely unlocks the target ECU for programming, provides a bill of material for the update to the target, and relocks the target ECU. 3. Provides a service to allow the target ECU to transfer the files without interfering with concurrent diagnostic tools or normal operation. 4. Provides to the target an indication of when the target can connect and begin transferring the package to itself from the programming master.