Research on Vehicle OTA Upgrade Technology Based on BSDIFF Difference Algorithm

In order to solve the problems of long download time, long upgrade time and high pressure of equipment server when upgrading the whole package of automobile OTA, this paper proposes a vehicle OTA upgrade technology based on bsdif differential algorithm. The algorithm can compare the difference between the old and new versions, download the patch package, reduce the download amount of the software package, improve the user satisfaction, and achieve a lighter upgrade under the premise of ensuring security.